[ { "id": 72, "name": "Apollo", "slug": "apollo", "former_names": [ "Meteor", "Apollo", "Apollo M" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/3d684926422fe826a03f5d68cd83bdb413d1c454.png", "website": "http://apollographql.com/", "all_locations": "San Francisco, CA, USA; Remote", "long_description": "Apollo GraphQL is the leader in open source and commercial GraphQL technologies. Apollo’s open-source GraphQL client, server, and gateway are downloaded more than 17M times per month and used in production by over 30% of the Fortune 500. Customers like Walmart, Expedia, Glassdoor, Audi, and PayPal, use the Apollo Graph Platform to unify their GraphQL efforts, collaborate on graph development, and safely iterate on their graphs. Based in San Francisco, Apollo is backed by Insight Partners, Andreessen Horowitz, Matrix Partners, Trinity Ventures, Y Combinator and individual investors.", "one_liner": "Apollo helps engineering teams accelerate delivery", "team_size": 200, "industry": "B2B", "subindustry": "B2B -> Infrastructure", "launched_at": 1326788979, "tags": [ "Developer Tools", "Open Source", "GraphQL" ], "tags_highlighted": [], "top_company": false, "isHiring": true, "nonprofit": false, "batch": "Summer 2011", "status": "Active", "industries": [ "B2B", "Infrastructure" ], "regions": [ "United States of America", "America / Canada", "Remote", "Fully Remote" ], "stage": "Growth", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/apollo", "api": "https://yc-oss.github.io/api/batches/summer-2011/apollo.json" }, { "id": 89, "name": "Citus Data", "slug": "citus-data", "former_names": [], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/202e7e02db190c7ab3eef78d63f9fe5d31e43275.png", "website": "http://citusdata.com", "all_locations": "San Francisco, CA, USA; Istanbul, Istanbul, Turkey; Amsterdam, NH, Netherlands", "long_description": "The amount of time businesses spend on their databases is altogether too much time. Citus is fixing this problem.\r\n\r\nCitus is worry-free Postgres. Built to scale out, Citus is an extension to Postgres that is available as open source, as enterprise software that can be run on-prem or on any cloud, and as a fully-managed database as a service. Whether you have a multi-tenant application that needs to scale out, or you need performance for your real-time analytics customers, with Citus, you can focus on your app—not your database.\r\n\r\nFounded in 2011, Citus Data is venture backed by Khosla Ventures and Data Collective. Citus is a Y Combinator alumnus and has offices in San Francisco’s SoMa district and Istanbul, Turkey. \r\n\r\nAt Citus, we make it simple to scale out Postgres. \r\n\r\nCitus Data online: www.citusdata.com\r\nDocumentation: docs.citusdata.com\r\nGitHub: github.com/citusdata/citus", "one_liner": "Real-time. Big data. PostgreSQL", "team_size": 45, "industry": "B2B", "subindustry": "B2B -> Infrastructure", "launched_at": 1326789195, "tags": [ "Open Source", "Big Data", "Databases" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Summer 2011", "status": "Acquired", "industries": [ "B2B", "Infrastructure" ], "regions": [ "United States of America", "Turkey", "Netherlands", "America / Canada", "Middle East and North Africa", "Europe", "Remote", "Partly Remote" ], "stage": "Growth", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/citus-data", "api": "https://yc-oss.github.io/api/batches/summer-2011/citus-data.json" }, { "id": 198, "name": "Docker", "slug": "docker", "former_names": [ "Dotcloud" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/8f74c3796e1b7675bab6c99118bcf9dd7b94ceec.png", "website": "http://docker.com", "all_locations": "San Francisco, CA, USA", "long_description": "Docker is the world’s leading software container platform. Developers use Docker to eliminate “works on my machine” problems when collaborating on code with co-workers. Operators use Docker to run and manage apps side-by-side in isolated containers to get better compute density. Enterprises use Docker to build agile software delivery pipelines to ship new features faster, more securely and with confidence for both Linux and Windows Server apps.", "one_liner": "Software development platform.", "team_size": 201, "industry": "B2B", "subindustry": "B2B -> Infrastructure", "launched_at": 1326790223, "tags": [ "Open Source", "DevOps", "Enterprise Software" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Summer 2010", "status": "Active", "industries": [ "B2B", "Infrastructure" ], "regions": [ "United States of America", "America / Canada" ], "stage": "Growth", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/docker", "api": "https://yc-oss.github.io/api/batches/summer-2010/docker.json" }, { "id": 246, "name": "RethinkDB", "slug": "rethinkdb", "former_names": [], "small_logo_thumb_url": "/company/thumb/missing.png", "website": "http://rethinkdb.com", "all_locations": "San Francisco, CA, USA", "long_description": "RethinkDB is the first open-source scalable database for the realtime web. It exposes an exciting new access model -- instead of polling for changes, the developer can tell the database to continuously push updated query results to applications in realtime. RethinkDB allows developer to build scalable realtime apps in a fraction of the time with fewer engineering resources.\n\nRethinkDB features a pleasant and powerful query language that has useful queries like table joins and groupBy, a highly parallelized architecture, and web tools for managing clusters.", "one_liner": "The open source database for the realtime web.", "team_size": 11, "industry": "B2B", "subindustry": "B2B -> Infrastructure", "launched_at": 1326790634, "tags": [ "Open Source" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Summer 2009", "status": "Acquired", "industries": [ "B2B", "Infrastructure" ], "regions": [ "United States of America", "America / Canada" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/rethinkdb", "api": "https://yc-oss.github.io/api/batches/summer-2009/rethinkdb.json" }, { "id": 407, "name": "Mattermost", "slug": "mattermost", "former_names": [ "SpinPunch" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/1828c07e7e0127350a2a1ce95943239d48691aaa.png", "website": "http://mattermost.com", "all_locations": "Palo Alto, CA, USA; Remote", "long_description": "Mattermost provides secure collaboration for technical and operational teams that work in environments with complex nation-state level security and trust requirements. We serve technology, public sector, national defense and financial services industries with customers ranging from tech giants, to the world’s largest banks, to the U.S. Department of Defense and governmental agencies around the world. \r\n\r\nOur self-hosted and cloud offerings provide team messaging, file sharing, integrations, audio and screen share, workflow automation and project management on an open source platform deployed by the world’s most secure and mission critical organizations. We co-build the future of collaboration with over 4,000 open source project contributors who’ve provided over 30,000 code improvements towards our shared product vision, which is translated into 20 languages. ", "one_liner": "Secure Collaboration for Technical Teams", "team_size": 120, "industry": "B2B", "subindustry": "B2B -> Productivity", "launched_at": 1695156681, "tags": [ "DevSecOps", "Collaboration", "Security", "Open Source" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Summer 2012", "status": "Active", "industries": [ "B2B", "Productivity" ], "regions": [ "United States of America", "America / Canada", "Remote", "Fully Remote" ], "stage": "Growth", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/mattermost", "api": "https://yc-oss.github.io/api/batches/summer-2012/mattermost.json" }, { "id": 490, "name": "InfluxData", "slug": "influxdata", "former_names": [], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/52f8bfabfa73534a4e180ab67b04914310f2a95e.png", "website": "https://influxdata.com", "all_locations": "New York City, NY, USA; San Francisco, CA, USA; Remote", "long_description": "InfluxData, the creators of InfluxDB, delivers a modern Open Source Platform built from the ground up for analyzing metrics and events (time series data) for DevOps and IoT applications. Whether the data comes from humans, sensors, or machines, InfluxData empowers developers to build next-generation monitoring, analytics, and IoT applications faster, easier, and to scale delivering real business value quickly. Based in San Francisco, InfluxData customers include Autodesk, Cisco, eBay, and Coupa. Visit https://www.influxdata.com.", "one_liner": "The platform for building and operating time series applications.", "team_size": 210, "industry": "B2B", "subindustry": "B2B -> Infrastructure", "launched_at": 1354492765, "tags": [ "Analytics", "Open Source", "Time Series", "Databases" ], "tags_highlighted": [], "top_company": false, "isHiring": true, "nonprofit": false, "batch": "Winter 2013", "status": "Active", "industries": [ "B2B", "Infrastructure" ], "regions": [ "United States of America", "America / Canada", "Remote", "Fully Remote" ], "stage": "Growth", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/influxdata", "api": "https://yc-oss.github.io/api/batches/winter-2013/influxdata.json" }, { "id": 528, "name": "CoreOS", "slug": "coreos", "former_names": [], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/0f9ad52c13f8ee67948f0995334dcaff8673134d.png", "website": "http://coreos.com", "all_locations": "San Francisco, CA, USA", "long_description": "CoreOS is part of the Red Hat family. A leader in the open source community and an innovator of open source projects, CoreOS creates and delivers critical components for containerized applications that help fuel broad adoption of secure, scalable and resilient infrastructure. The team maintains several open source projects, including: Container Linux: the secure automatic updating OS; and etcd, the distributed data store for Kubernetes. \r\n\r\nJoin us at https://coreos.com/ and @CoreOS on Twitter.", "one_liner": "Open source tools of modern distributed systems.", "team_size": 150, "industry": "B2B", "subindustry": "B2B -> Infrastructure", "launched_at": 1367523435, "tags": [ "Open Source", "DevOps" ], "tags_highlighted": [], "top_company": true, "isHiring": false, "nonprofit": false, "batch": "Summer 2013", "status": "Acquired", "industries": [ "B2B", "Infrastructure" ], "regions": [ "United States of America", "America / Canada" ], "stage": "Growth", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/coreos", "api": "https://yc-oss.github.io/api/batches/summer-2013/coreos.json" }, { "id": 614, "name": "PipelineDB", "slug": "pipelinedb", "former_names": [ "PipelineDB", "Stride API" ], "small_logo_thumb_url": "/company/thumb/missing.png", "website": "http://www.pipelinedb.com", "all_locations": "Los Angeles, CA, USA", "long_description": "PipelineDB is an open-source PostgreSQL extension that enables realtime reporting use cases by continuously aggregating large streams of time series data down into summary data. It shines the most at larger scales, where storing lots of raw time-series data and aggregating it over and over again becomes inefficient. The amount of value that PipelineDB adds is directly proportional to the amount of continuous aggregation that an analytics use case can benefit from. PipelineDB should be used for analytics use cases that only require summary data, like realtime reporting dashboards. PipelineDB is not a good fit for exploratory analytics on siloed datasets.\r\n", "one_liner": "Open-source time-series data analytics extension for PostgreSQL", "team_size": 2, "industry": "B2B", "subindustry": "B2B -> Infrastructure", "launched_at": 1384978939, "tags": [ "Open Source", "Time Series" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Winter 2014", "status": "Acquired", "industries": [ "B2B", "Infrastructure" ], "regions": [ "United States of America", "America / Canada" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/pipelinedb", "api": "https://yc-oss.github.io/api/batches/winter-2014/pipelinedb.json" }, { "id": 681, "name": "Protocol Labs", "slug": "protocol-labs", "former_names": [ "Filecoin" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/fd54c56e11e7dd30d3e421cedfe5bb4a57c001a3.png", "website": "https://protocol.ai/", "all_locations": "Palo Alto, CA, USA; Remote", "long_description": "Protocol Labs is an open-source research, development, and deployment laboratory. Our projects include IPFS, Filecoin, libp2p, and many more. We aim to make human existence orders of magnitude better through technology.\r\n\r\nSome of our projects.\r\n\r\nIPFS makes the web work peer-to-peer. IPFS is a protocol for storing, addressing, and transferring data, designed to replace HTTP in many contexts. IPFS uses content-addressing to uniquely identify and link to information. IPFS is one of the leading protocols of Web3, crypto, and the decentralized web movements. IPFS serves millions of end users and tens of thousands of developers. It powers the websites and applications of small startups, large enterprises, and even blockchains.\r\n\r\nFilecoin is a decentralized storage network, designed to store humanity's most important information. Filecoin is a cryptocurrency incentivized decentralized market, where storage providers earn filecoin tokens for renting out storage space. (Think airbnb for cloud storage). Filecoin is one of the leading projects in the cryptocurrency/blockchain space.", "one_liner": "Protocol Labs makes internet protocols: IPFS, Filecoin, and more.", "team_size": 130, "industry": "B2B", "subindustry": "B2B -> Infrastructure", "launched_at": 1398907811, "tags": [ "Crypto / Web3", "Open Source" ], "tags_highlighted": [ "Crypto / Web3" ], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Summer 2014", "status": "Active", "industries": [ "B2B", "Infrastructure" ], "regions": [ "United States of America", "America / Canada", "Remote", "Fully Remote" ], "stage": "Growth", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/protocol-labs", "api": "https://yc-oss.github.io/api/batches/summer-2014/protocol-labs.json" }, { "id": 786, "name": "Sails Co.", "slug": "sails-co", "former_names": [ "Treeline", "Sails", "Treeline" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/065c8c25c94a5b7288159539b52e8719bf30381d.png", "website": "https://sailsjs.com/about", "all_locations": "Austin, TX, USA", "long_description": "The Sails Company was founded by the original author and maintainers of the Sails framework. In addition to free and open-source software, The Sails Company offers a full-service web & mobile studio and professional support for the tools we maintain.", "one_liner": "Full-service web, mobile, & cloud studio providing professional…", "team_size": 4, "industry": "B2B", "subindustry": "B2B -> Engineering, Product and Design", "launched_at": 1416221771, "tags": [ "Open Source", "Web Development", "Cloud Computing" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Winter 2015", "status": "Active", "industries": [ "B2B", "Engineering, Product and Design" ], "regions": [ "United States of America", "America / Canada", "Remote", "Partly Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/sails-co", "api": "https://yc-oss.github.io/api/batches/winter-2015/sails-co.json" }, { "id": 810, "name": "GitLab", "slug": "gitlab", "former_names": [], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/af0d32f65e9007b7edbde422787633e338fa9bff.png", "website": "http://gitlab.com/", "all_locations": "San Francisco, CA, USA; Remote", "long_description": "GitLab is the first single application for the entire DevOps lifecycle. Only GitLab enables Concurrent DevOps, unlocking organizations from the constraints of today’s toolchain. GitLab provides unmatched visibility, radical new levels of efficiency and comprehensive governance to significantly compress the time between planning a change and monitoring its effect. This makes the software lifecycle 200% faster, radically improving the speed of business.\r\n\r\nGitLab and Concurrent DevOps collapses cycle times by driving higher efficiency across all stages of the software development lifecycle. For the first time, Product, Development, QA, Security, and Operations teams can work concurrently in a single application. There’s no need to integrate and synchronize tools, or waste time waiting for handoffs. Everyone contributes to a single conversation, instead of managing multiple threads across disparate tools. And only GitLab gives teams complete visibility across the lifecycle with a single, trusted source of data to simplify troubleshooting and drive accountability. All activity is governed by consistent controls, making security and compliance first-class citizens instead of an afterthought.\r\n\r\nBuilt on Open Source, GitLab leverages the community contributions of thousands of developers and millions of users to continuously deliver new DevOps innovations. More than 100,000 organizations from startups to global enterprise organizations, including Ticketmaster, Jaguar Land Rover, NASDAQ, Dish Network and Comcast trust GitLab to deliver great software at new speeds.", "one_liner": "A complete DevOps platform delivered as a single application.", "team_size": 2000, "industry": "B2B", "subindustry": "B2B -> Engineering, Product and Design", "launched_at": 1416307238, "tags": [ "Developer Tools", "DevSecOps", "Open Source" ], "tags_highlighted": [], "top_company": true, "isHiring": false, "nonprofit": false, "batch": "Winter 2015", "status": "Public", "industries": [ "B2B", "Engineering, Product and Design" ], "regions": [ "United States of America", "America / Canada", "Remote", "Fully Remote" ], "stage": "Growth", "app_video_public": true, "demo_day_video_public": true, "app_answers": true, "question_answers": false, "url": "https://www.ycombinator.com/companies/gitlab", "api": "https://yc-oss.github.io/api/batches/winter-2015/gitlab.json" }, { "id": 832, "name": "Standard Cyborg", "slug": "standard-cyborg", "former_names": [], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/ea641cf296beace7a7288415d4808dc519f3a987.png", "website": "http://standardcyborg.com", "all_locations": "San Francisco, CA, USA", "long_description": "We are multiplying the potential of the real world by making computer vision accessible to all.\r\n\r\nWe create the cloud and edge tools that developers and non-developers require in order to build, deploy, and improve CV solutions quickly.\r\n\r\nstandardcyborg.com (YC W15)", "one_liner": "Buid, test and deploy perception applications", "team_size": 9, "industry": "Healthcare", "subindustry": "Healthcare -> Medical Devices", "launched_at": 1416310916, "tags": [ "Machine Learning", "Computer Vision", "Open Source" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Winter 2015", "status": "Inactive", "industries": [ "Healthcare", "Medical Devices" ], "regions": [ "United States of America", "America / Canada", "Remote", "Partly Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/standard-cyborg", "api": "https://yc-oss.github.io/api/batches/winter-2015/standard-cyborg.json" }, { "id": 943, "name": "Font Awesome", "slug": "font-awesome", "former_names": [ "Fonticons" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/fa479320e3d153a191f13fca9e3c89b631a02350.png", "website": "http://fontawesome.com", "all_locations": "Bentonville, AR, USA; Joplin, MO, USA; Remote", "long_description": "Add a line of code and get thousands of icons and social logos on your website instantly. Easy to set up, easy to use, and crazy powerful. Let us take care of the icons so you can get back to the important stuff.\r\n\r\nFont Awesome. Go make something Awesome.", "one_liner": "Icons and social logos for your website.", "team_size": 17, "industry": "B2B", "subindustry": "B2B -> Engineering, Product and Design", "launched_at": 1430202917, "tags": [ "Developer Tools", "SaaS", "Design Tools", "Open Source" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Summer 2015", "status": "Active", "industries": [ "B2B", "Engineering, Product and Design" ], "regions": [ "United States of America", "America / Canada", "Remote", "Fully Remote" ], "stage": "Growth", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/font-awesome", "api": "https://yc-oss.github.io/api/batches/summer-2015/font-awesome.json" }, { "id": 996, "name": "Daily", "slug": "daily", "former_names": [ "Pluot Communications", "Daily", "Daily.co" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/927c390a496a781ceefe9112931064f3f4b058ea.png", "website": "https://daily.co", "all_locations": "San Francisco, CA, USA; Remote", "long_description": "Daily is real-time voice, video, and AI for developers. Our cross-platform SDKs and global infrastructure enable ultra-low latency, highest quality experiences for developers building real-time voice and video AI agents. Our platform also supports integration of traditional voice/video calls, in addition to AI agent experiences. ", "one_liner": "Conversational Voice and Multimodal AI built with Open Source ", "team_size": 126, "industry": "B2B", "subindustry": "B2B -> Productivity", "launched_at": 1447280415, "tags": [ "Developer Tools", "Open Source", "AI", "AI Assistant" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Winter 2016", "status": "Active", "industries": [ "B2B", "Productivity" ], "regions": [ "United States of America", "America / Canada", "Remote", "Fully Remote" ], "stage": "Growth", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/daily", "api": "https://yc-oss.github.io/api/batches/winter-2016/daily.json" }, { "id": 1756, "name": "Tipe", "slug": "tipe", "former_names": [], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/8fe7eca773e37878444ee870052750282ac382aa.png", "website": "https://tipe.io", "all_locations": "San Francisco, CA, USA; Remote", "long_description": "Tipe allows teams to edit, preview, and publish content for their apps. You can use tipe to change static content to dynamic, allow non-technical team members to edit anything. They can then preview those changes and get feedback before publishing. All of this is set up in less than 3 minutes from your developer.", "one_liner": "Open-source, customizable, headless CMS", "team_size": 5, "industry": "B2B", "subindustry": "B2B -> Infrastructure", "launched_at": 1509599007, "tags": [ "Open Source" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Winter 2018", "status": "Inactive", "industries": [ "B2B", "Infrastructure" ], "regions": [ "United States of America", "America / Canada", "Remote", "Fully Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/tipe", "api": "https://yc-oss.github.io/api/batches/winter-2018/tipe.json" }, { "id": 1766, "name": "CodeStream", "slug": "codestream", "former_names": [], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/162cbcf64286492bd4d396c89184015bac491ca1.png", "website": "http://codestream.com", "all_locations": "New York, NY, USA; Remote", "long_description": "CodeStream's IDE plugins take the pain out of code reviews. With one command, request feedback on a snapshot of your repo, including uncommitted & unpushed code, allowing you to verify that your work-in-progress is on the right track. (You can also do it the old-fashioned way by committing & pushing at the end of your dev sprint, of course)", "one_liner": "CodeStream is a Developer Collaboration Platform designed to…", "team_size": 10, "industry": "B2B", "subindustry": "B2B -> Engineering, Product and Design", "launched_at": 1509602622, "tags": [ "Developer Tools", "SaaS", "Collaboration", "Open Source" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Winter 2018", "status": "Acquired", "industries": [ "B2B", "Engineering, Product and Design" ], "regions": [ "United States of America", "America / Canada", "Remote", "Fully Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/codestream", "api": "https://yc-oss.github.io/api/batches/winter-2018/codestream.json" }, { "id": 1910, "name": "Activeloop", "slug": "activeloop", "former_names": [ "Snark.ai", "Snark AI" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/c516ed5054847ecb1afb63f795f712b8d5c7f23d.png", "website": "https://activeloop.ai/", "all_locations": "San Francisco, CA, USA; Mountain View, CA, USA", "long_description": "We provide a simple API for creating, storing, versioning, and collaborating on multi-modal AI datasets of any size. With Activeloop's open-core stack, you can rapidly transform and stream data while training models at scale. Deep Lake powers foundational model training by acting as a vector database with significant benefits, such as (1) the ability to use multi-modal datasets to fine-tune your own LLM models, (2) storing both the embeddings and the original data with automatic version control, so no embedding re-computation is needed (3) truly serverless service with no vendor lock-in. How cool is that?\r\n\r\nGitHub loves us - we're one of the fastest-growing libraries there, and we're used by little-known companies like Google, Waymo, and Intel. No big deal. \r\n\r\nOur founding team hails from places like Princeton, Stanford, Google, and Tesla, and we're backed by Y Combinator & other Silicon Valley heavyweights. \r\n\r\nActiveloop is hiring, and we want you! Check out our open roles on our YC page and join the fun.\r\n\r\n10-min demo: https://activeloop.wistia.com/medias/aibvo0dst2\r\nWhitepaper: https://www.deeplake.ai/whitepaper", "one_liner": "Database for AI", "team_size": 15, "industry": "B2B", "subindustry": "B2B -> Infrastructure", "launched_at": 1524690140, "tags": [ "Computational Storage", "Deep Learning", "Generative AI", "Computer Vision", "Open Source" ], "tags_highlighted": [], "top_company": false, "isHiring": true, "nonprofit": false, "batch": "Summer 2018", "status": "Active", "industries": [ "B2B", "Infrastructure" ], "regions": [ "United States of America", "America / Canada", "Remote", "Partly Remote" ], "stage": "Growth", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/activeloop", "api": "https://yc-oss.github.io/api/batches/summer-2018/activeloop.json" }, { "id": 1925, "name": "Optic", "slug": "optic", "former_names": [], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/13e79085ad4efb3abef387683d79f4d78e55bb43.png", "website": "http://useoptic.com/", "all_locations": "New York, NY, USA; Remote", "long_description": "We help developers collaborate at scale and build better APIs. Optic’s open source tools makes it easy for developers to document API changes, review each other’s API changes during code review, and catch breaking changes before they reach production. \r\n\r\n**tl;dr** It’s version control but for behavior not code. We are taking the really successful ideas from Git / Code Review / CI and applying them to API descriptions and (future) other non-code artifacts. \r\n\r\nEngineers at [Snyk](https://snyk.io/) use Optic daily to make the new Snyk API great. Read their engineering blog: [Snyk's shift left approach to API development | Snyk](https://snyk.io/blog/snyk-api-development-shift-left/)", "one_liner": "Making APIs Developer-friendly ", "team_size": 5, "industry": "B2B", "subindustry": "B2B -> Engineering, Product and Design", "launched_at": 1524715380, "tags": [ "Developer Tools", "Open Source" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Summer 2018", "status": "Acquired", "industries": [ "B2B", "Engineering, Product and Design" ], "regions": [ "United States of America", "America / Canada", "Remote", "Fully Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/optic", "api": "https://yc-oss.github.io/api/batches/summer-2018/optic.json" }, { "id": 12032, "name": "Okteto", "slug": "okteto", "former_names": [], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/65528c51b9eccc4012b7ad09d502f4452f49c03f.png", "website": "https://okteto.com", "all_locations": "San Francisco, CA, USA; Denver, CO, USA; Madrid, Community of Madrid, Spain; Buenos Aires, CABA, Argentina; Remote", "long_description": "At Okteto, we are working hard at creating the next-generation development experience for teams of all sizes. Have you ever seen how long it takes a developer to set up everything they need before working on a feature? We are fixing that. We want developers to focus on building value for their teams instead of wasting time setting up local environments or trying to debug \"production only\" issues.", "one_liner": "Cloud Development Environments with one click", "team_size": 30, "industry": "B2B", "subindustry": "B2B -> Infrastructure", "launched_at": 1541559692, "tags": [ "Developer Tools", "SaaS", "B2B", "Open Source", "Kubernetes" ], "tags_highlighted": [], "top_company": false, "isHiring": true, "nonprofit": false, "batch": "Winter 2019", "status": "Active", "industries": [ "B2B", "Infrastructure" ], "regions": [ "United States of America", "Spain", "Argentina", "America / Canada", "Europe", "Latin America", "Remote", "Fully Remote" ], "stage": "Growth", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/okteto", "api": "https://yc-oss.github.io/api/batches/winter-2019/okteto.json" }, { "id": 12502, "name": "Bun", "slug": "bun", "former_names": [ "Codeblog", "Webthing" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/6cf9201e83fba23f5038d47b722860fb10f40642.png", "website": "https://bun.sh", "all_locations": "San Francisco, CA, USA", "long_description": "Bun is an incredibly fast all-in-one toolkit for building, installing, running, and testing JavaScript and TypeScript. We were born out of frustration with the fragmented, slow JavaScript ecosystem and are on a mission to make JavaScript development faster and more productive.", "one_liner": "Bun is an incredibly fast all-in-one JavaScript toolkit", "team_size": 13, "industry": "B2B", "subindustry": "B2B -> Infrastructure", "launched_at": 1746486339, "tags": [ "Developer Tools", "Open Source" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Summer 2019", "status": "Acquired", "industries": [ "B2B", "Infrastructure" ], "regions": [ "United States of America", "America / Canada" ], "stage": "Growth", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/bun", "api": "https://yc-oss.github.io/api/batches/summer-2019/bun.json" }, { "id": 12615, "name": "LunaSec", "slug": "lunasec", "former_names": [ "Refinery Labs" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/acc3150187be7fce01784994ec62525354b915cd.png", "website": "https://www.lunasec.io", "all_locations": "Seattle, WA, USA; Remote", "long_description": "LunaSec is dead, fyi. Please email me personally to get in touch!\r\n\r\n-----\r\n\r\nLunaTrace isn't just another security scanner that blasts you with vulnerabilities. LunaSec has developed a hosted Open Source dependency security tool that is smarter, faster, and quieter than any other. It's backed by a team of security experts who monitor the latest attacks, write remediation guides, and help you patch in hours instead of weeks.\r\n\r\nIn under 2 minutes, for free, you can generate your own vulnerability report to gain insight into the security + compliance of your software by clicking here: https://lunatrace.lunasec.io/\r\n\r\nEmail us at: contact@lunasec.io\r\nOur GitHub: https://github.com/lunasec-io/lunasec", "one_liner": "An Open Source dependency security tool that is smarter than the rest", "team_size": 4, "industry": "B2B", "subindustry": "B2B -> Security", "launched_at": 1556642382, "tags": [ "Developer Tools", "DevSecOps", "Security Orchestration, Automation and Response (SOAR)", "Security", "Open Source" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Summer 2019", "status": "Inactive", "industries": [ "B2B", "Security" ], "regions": [ "United States of America", "America / Canada", "Remote", "Fully Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/lunasec", "api": "https://yc-oss.github.io/api/batches/summer-2019/lunasec.json" }, { "id": 12618, "name": "Embrace", "slug": "embrace", "former_names": [], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/6c5df7e755694ec01e6b16cfc307e0ddf5712e43.png", "website": "https://embrace.io", "all_locations": "Los Angeles, CA, USA; Remote", "long_description": "*S19 and YCG F21*\r\nEngineering teams shouldn’t be in the dark when it comes to the performance of their web and mobile apps and user experiences. With our industry-leading observability technology, Embrace aims to give SRE and DevOps teams better insight into what matters most – their users – by tying performance data to backend observability insights.\r\n\r\nAs the only user-focused, use-focused observability solution built on OpenTelemetry, Embrace delivers crucial insights across both DevOps and frontend teams to illuminate real customer impact – not just server impact – to deliver the best app experiences. Customers like The New York Times, Marriott, Warby Parker, Masterclass, Home Depot, and Cameo love Embrace’s observability platform because it makes extremely complicated and voluminous data actionable.", "one_liner": "Modern user-focused observability built on OpenTelemetry", "team_size": 62, "industry": "B2B", "subindustry": "B2B -> Engineering, Product and Design", "launched_at": 1556659657, "tags": [ "Artificial Intelligence", "SaaS", "Open Source", "Data Engineering" ], "tags_highlighted": [], "top_company": false, "isHiring": true, "nonprofit": false, "batch": "Summer 2019", "status": "Active", "industries": [ "B2B", "Engineering, Product and Design" ], "regions": [ "United States of America", "America / Canada", "Remote", "Fully Remote" ], "stage": "Growth", "app_video_public": false, "demo_day_video_public": true, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/embrace", "api": "https://yc-oss.github.io/api/batches/summer-2019/embrace.json" }, { "id": 12637, "name": "OpenReplay", "slug": "asayer", "former_names": [ "Asayer" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/115e9bc9f54e89ef6b7151c81d7b8dbca815879f.png", "website": "https://www.openreplay.com/", "all_locations": "New York City, NY, USA; Paris, Île-de-France, France", "long_description": "Open-source alternative to FullStory and LogRocket. Self-hosted for a complete control over your data and costs.", "one_liner": "Open-source, self-hosted, session replay tool for developers.", "team_size": 11, "industry": "B2B", "subindustry": "B2B -> Infrastructure", "launched_at": 1556760800, "tags": [ "Developer Tools", "SaaS", "Open Source" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Summer 2019", "status": "Active", "industries": [ "B2B", "Infrastructure" ], "regions": [ "United States of America", "France", "America / Canada", "Europe", "Remote", "Partly Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/asayer", "api": "https://yc-oss.github.io/api/batches/summer-2019/asayer.json" }, { "id": 12669, "name": "Data Mechanics", "slug": "data-mechanics", "former_names": [], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/041cd41aaf413fd601a958566433246e70084357.png", "website": "https://www.datamechanics.co", "all_locations": "Paris, Île-de-France, France", "long_description": "Data Mechanics was acquired by NetApp in 2021 and integrated in the Spot.io product portfolio. Our managed Spark-on-Kubernetes platform is live and running under the name Ocean for Apache Spark: https://spot.io/products/ocean-apache-spark/", "one_liner": "Spark-on-Kubernetes Data Engineering Platform", "team_size": 25, "industry": "B2B", "subindustry": "B2B -> Infrastructure", "launched_at": 1556782113, "tags": [ "SaaS", "B2B", "Open Source", "Data Engineering" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Summer 2019", "status": "Acquired", "industries": [ "B2B", "Infrastructure" ], "regions": [ "France", "Europe", "Remote", "Partly Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/data-mechanics", "api": "https://yc-oss.github.io/api/batches/summer-2019/data-mechanics.json" }, { "id": 12675, "name": "Wasmer", "slug": "wasmer", "former_names": [], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/fe488b892d71890ae82f8d4a1420433b33d6b741.png", "website": "https://wasmer.io", "all_locations": "San Francisco, CA, USA; Remote", "long_description": "We are working on the software that will power the next generation of Cloud Computing (Edge Computing) platforms using WebAssembly.\r\n\r\nYou can see us as a mix between Docker (but 100x more performant in startup time, and with 100x more lightweight containers), npm (we released the first WebAssembly package manager: wapm.io) and the JVM (but more universal).", "one_liner": "The Operating System for Edge Computing", "team_size": 11, "industry": "B2B", "subindustry": "B2B -> Infrastructure", "launched_at": 1556823526, "tags": [ "Developer Tools", "Open Source" ], "tags_highlighted": [], "top_company": false, "isHiring": true, "nonprofit": false, "batch": "Summer 2019", "status": "Active", "industries": [ "B2B", "Infrastructure" ], "regions": [ "United States of America", "America / Canada", "Remote", "Fully Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/wasmer", "api": "https://yc-oss.github.io/api/batches/summer-2019/wasmer.json" }, { "id": 12724, "name": "Chaos Genius", "slug": "chaos-genius", "former_names": [ "GoodHealth" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/c4d680463f8fee3408726becdad9bccd8e14c8a1.png", "website": "http://www.chaosgenius.io", "all_locations": "Bengaluru, KA, India; San Francisco, CA, USA; Remote", "long_description": "Chaos Genius is a DataOps Observability platform for Snowflake. Enable Snowflake Observability to reduce Snowflake costs and optimize query performance.", "one_liner": "DataOps Observability Platform for Snowflake", "team_size": 10, "industry": "B2B", "subindustry": "B2B -> Analytics", "launched_at": 1600455323, "tags": [ "Cloud Workload Protection", "Machine Learning", "Analytics", "Open Source", "Data Engineering" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Winter 2020", "status": "Acquired", "industries": [ "B2B", "Analytics" ], "regions": [ "India", "United States of America", "South Asia", "America / Canada", "Remote", "Fully Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/chaos-genius", "api": "https://yc-oss.github.io/api/batches/winter-2020/chaos-genius.json" }, { "id": 12737, "name": "Tensil", "slug": "tensil", "former_names": [], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/3aefe6d1c4f47d9ef26a3296e1724c3efe9bd5ac.png", "website": "https://www.tensil.ai", "all_locations": "San Francisco, CA, USA; Remote", "long_description": "Tensil automates machine learning hardware accelerator design. Our goal is to enable ML in every device. We've developed an algorithm that can design the best hardware accelerator for your machine learning model, unlocking 10x better performance per watt-dollar than GPUs and other hardware accelerators. Our technology enables our customers to create unbeatable products with Tensil custom hardware at the core.", "one_liner": "We turn machine learning models into custom hardware.", "team_size": 2, "industry": "Industrials", "subindustry": "Industrials -> Manufacturing and Robotics", "launched_at": 1557445614, "tags": [ "Edge Computing Semiconductors", "Hardware", "Open Source", "AI" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Summer 2019", "status": "Inactive", "industries": [ "Industrials", "Manufacturing and Robotics" ], "regions": [ "United States of America", "America / Canada", "Remote", "Fully Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/tensil", "api": "https://yc-oss.github.io/api/batches/summer-2019/tensil.json" }, { "id": 13098, "name": "MindsDB", "slug": "mindsdb", "former_names": [], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/2d1835a1b83e15542370853a52f30681b79212aa.png", "website": "https://www.mindsdb.com/", "all_locations": "San Francisco, CA, USA", "long_description": "MindsDB is a fast-growing AI startup headquartered in San Francisco, California. As a leading innovator bringing AI and Data together, our passion is empowering companies to easily build AI capabilities that can Think, Understand and Orchestrate: enabling teams to move from prototyping & experimentation to production in a fast & scalable way.\r\n\r\nMindsDB was founded in 2017 by Adam Carrigan and Jorge Torres, inspired by Ian M. Banks's Culture series, in which super AI systems called Minds collaborate with other forms of life to accomplish incredible goals. Starting as an Open-Source project, MindsDB has grown to be one of the most widely used AI-Data platforms in the world, with a growing community and more than 700 contributor developers from every corner of the globe.\r\n\r\nWe are backed with over $55M in funding from Mayfield, Benchmark, YCombinator, and nVidia. MindsDB is also recognized by Forbes as one of America's most promising AI companies (2021) and by Gartner as a Cool Vendor for Data and AI (2022).", "one_liner": "Connect, Unify, Respond to any data, anywhere with human-level…", "team_size": 41, "industry": "B2B", "subindustry": "B2B -> Infrastructure", "launched_at": 1584047879, "tags": [ "Developer Tools", "Machine Learning", "Open Source", "Enterprise Software", "AI" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Winter 2020", "status": "Active", "industries": [ "B2B", "Infrastructure" ], "regions": [ "United States of America", "America / Canada", "Remote", "Partly Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/mindsdb", "api": "https://yc-oss.github.io/api/batches/winter-2020/mindsdb.json" }, { "id": 13147, "name": "Replicate", "slug": "replicate", "former_names": [], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/256be79b4f9ac851425e3bf2a60af5ae33ca72ba.png", "website": "https://replicate.com", "all_locations": "San Francisco, CA, USA", "long_description": "", "one_liner": "Run machine learning models in the cloud", "team_size": 36, "industry": "B2B", "subindustry": "B2B -> Infrastructure", "launched_at": 1647283616, "tags": [ "Developer Tools", "Machine Learning", "Community", "Open Source", "AI" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Winter 2020", "status": "Acquired", "industries": [ "B2B", "Infrastructure" ], "regions": [ "United States of America", "America / Canada", "Remote", "Partly Remote" ], "stage": "Growth", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/replicate", "api": "https://yc-oss.github.io/api/batches/winter-2020/replicate.json" }, { "id": 13159, "name": "Openbase", "slug": "openbase", "former_names": [ "Devstore" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/dc87029e5a78d6cc28d8d10fc173581df6c2afa6.png", "website": "", "all_locations": "San Francisco, CA, USA; Remote", "long_description": "Openbase was the leading platform for developers to discover and choose open-source libraries. It offered countless reviews, metrics, and insights enjoyed by millions of developers worldwide. Discontinued in 2023.", "one_liner": "Open-source library discovery", "team_size": 0, "industry": "B2B", "subindustry": "B2B -> Engineering, Product and Design", "launched_at": 1594854533, "tags": [ "Developer Tools", "DevSecOps", "Open Source" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Summer 2020", "status": "Inactive", "industries": [ "B2B", "Engineering, Product and Design" ], "regions": [ "United States of America", "America / Canada", "Remote", "Fully Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/openbase", "api": "https://yc-oss.github.io/api/batches/summer-2020/openbase.json" }, { "id": 13163, "name": "Fig", "slug": "fig", "former_names": [ "Quid", "FanX", "Hercules" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/c3cdca216abc1d1dd5118f6422d7ea91ba9a1b90.png", "website": "http://fig.io", "all_locations": "San Francisco, CA, USA", "long_description": "Fig is re-imagining the terminal. We make it more accessible to beginners and more productive for advanced engineers\r\n\r\nOur first product is autocomplete, but we plan to expand into a full App Store ecosystem for the Terminal. We can do a bunch of cool stuff, check out our website.\r\n\r\nAnd if you're interested, we are hiring 😀", "one_liner": "Fig adds visual apps, shortcuts, and autocomplete to your terminal.", "team_size": 5, "industry": "B2B", "subindustry": "B2B -> Engineering, Product and Design", "launched_at": 1597986049, "tags": [ "Developer Tools", "DevSecOps", "Open Source" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Summer 2020", "status": "Acquired", "industries": [ "B2B", "Engineering, Product and Design" ], "regions": [ "United States of America", "America / Canada" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/fig", "api": "https://yc-oss.github.io/api/batches/summer-2020/fig.json" }, { "id": 13312, "name": "PostHog", "slug": "posthog", "former_names": [ "Hiberly" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/7f1b6d1787ae32a7ebc0d417ec6fb8a204a3bbe9.png", "website": "https://www.posthog.com", "all_locations": "San Francisco, CA, USA; Remote", "long_description": "PostHog helps engineers build better products. We provide everything they need to make sure they are building something that people want. This means - product analytics, session replays, feedback tools, feature flags, experimentation, LLM observability, and a data warehouse (with SQL) with one click data imports from the places you use.\r\n\r\nWe've been averaging ~10% monthly revenue growth, we are [default alive](http://www.paulgraham.com/aord.html), and we didn't raised a huge / now-overpriced round in 2021. While others are focused on layoffs and struggling to grow into huge valuations, we're focusing on an awesome product for end users, hiring (a handful of) exceptional team members and seeing fantastic increases in revenue as a result.\r\n\r\nCheck out posthog.com/careers if you want to be part of this journey.", "one_liner": "The single platform to analyze, test, observe, and deploy new features", "team_size": 150, "industry": "B2B", "subindustry": "B2B -> Analytics", "launched_at": 1583901228, "tags": [ "Developer Tools", "B2B", "Open Source" ], "tags_highlighted": [], "top_company": false, "isHiring": true, "nonprofit": false, "batch": "Winter 2020", "status": "Active", "industries": [ "B2B", "Analytics" ], "regions": [ "United States of America", "America / Canada", "Remote", "Fully Remote" ], "stage": "Growth", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": true, "url": "https://www.ycombinator.com/companies/posthog", "api": "https://yc-oss.github.io/api/batches/winter-2020/posthog.json" }, { "id": 13549, "name": "Airbyte", "slug": "airbyte", "former_names": [ "Daxtarity", "Dataline" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/fc4c9a8bb7a853c14be4dac967fb9717f36fca1c.png", "website": "https://airbyte.com/", "all_locations": "San Francisco, CA, USA", "long_description": "Airbyte Agents is the context layer your AI agents query before they act. Features the Context Store, which unifies entities across Salesforce, Stripe, Zendesk and more. Use it from the UI, your LLM via MCP, or our SDK. 40% fewer tool calls, up to 80% fewer tokens.\r\n\r\nAirbyte Data Replication is the leading open data movement platform that empowers data teams in the AI era by transforming raw data into actionable intelligence. \r\n\r\nhttps://github.com/airbytehq/", "one_liner": "Context layer for production-grade AI agents", "team_size": 90, "industry": "B2B", "subindustry": "B2B", "launched_at": 1584288236, "tags": [ "Artificial Intelligence", "Developer Tools", "Open Source", "Data Engineering", "AI" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Winter 2020", "status": "Active", "industries": [ "B2B" ], "regions": [ "United States of America", "America / Canada" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/airbyte", "api": "https://yc-oss.github.io/api/batches/winter-2020/airbyte.json" }, { "id": 19890, "name": "Ukama", "slug": "ukama", "former_names": [ "Kakapo Networks Inc.", "Kakapo Networks" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/4d4a1645de8b3407d68bda9c14927f61ee1b17fc.png", "website": "http://www.ukama.com", "all_locations": "Pleasanton, CA, USA; Remote", "long_description": "", "one_liner": "Empowering anyone to build cellular network", "team_size": 7, "industry": "B2B", "subindustry": "B2B", "launched_at": 1599762606, "tags": [ "Hard Tech", "Hardware", "SaaS", "Open Source" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Summer 2020", "status": "Active", "industries": [ "B2B" ], "regions": [ "United States of America", "America / Canada", "Remote", "Fully Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/ukama", "api": "https://yc-oss.github.io/api/batches/summer-2020/ukama.json" }, { "id": 19932, "name": "Jitsu", "slug": "jitsu", "former_names": [ "kSense" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/d2a6bc92874bce104c70f6971a040465116e2321.png", "website": "https://jitsu.com", "all_locations": "New York City, NY, USA; Remote", "long_description": "Jitsu is the fastest, most durable way to collect event data from every source - web, app, email, chatbot, CRM - into your data warehouse. 100% open-source. Purpose built, secure and ready in minutes.", "one_liner": "Open-Source CDP (acquired by Helium Ventures)", "team_size": 4, "industry": "B2B", "subindustry": "B2B -> Analytics", "launched_at": 1597695723, "tags": [ "SaaS", "B2B", "Open Source", "Data Engineering" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Summer 2020", "status": "Acquired", "industries": [ "B2B", "Analytics" ], "regions": [ "United States of America", "America / Canada", "Remote", "Fully Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/jitsu", "api": "https://yc-oss.github.io/api/batches/summer-2020/jitsu.json" }, { "id": 21770, "name": "SuperTokens", "slug": "supertokens", "former_names": [], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/4353b29adbf3c289fd3165964d86888720519f1b.png", "website": "https://supertokens.com", "all_locations": "San Francisco, CA, USA", "long_description": "SuperTokens is building open source authentication (as an alternative to Auth0, Firebase and AWS Cognito). Add secure, hassle free authentication to your app in 1 day. We enable startups to launch quicker and focus on their core product offering\r\n\r\n1. We're easier to implement as we take a modular approach - making it possible to pick only the features you need for your use case. This means you need not worry about complications associated with other features (eg: SSO and OAuth if you don’t need it) and this in turn makes it easier to implement and manage SuperTokens.\r\n2. Developer's can own and manage their user's data. \r\n3. SuperTokens can be run on your premise for free and also has a generous hosted tier for those who dont want to manage it themselves.\r\n\r\nSuperTokens is being used by hundreds of developers across the globe.", "one_liner": "Open source alternative to Auth0 / AWS Cognito / Firebase Auth", "team_size": 10, "industry": "B2B", "subindustry": "B2B -> Security", "launched_at": 1599762607, "tags": [ "Developer Tools", "SaaS", "B2B", "Open Source" ], "tags_highlighted": [], "top_company": false, "isHiring": true, "nonprofit": false, "batch": "Summer 2020", "status": "Active", "industries": [ "B2B", "Security" ], "regions": [ "United States of America", "America / Canada", "Remote", "Partly Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/supertokens", "api": "https://yc-oss.github.io/api/batches/summer-2020/supertokens.json" }, { "id": 21782, "name": "Lightdash", "slug": "hubble", "former_names": [ "Hubble" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/a88272bf08bd6e30982b7eb442db6a1219b3b388.png", "website": "http://lightdash.com/", "all_locations": "London, England, United Kingdom; Remote", "long_description": "Lightdash is an open-source Looker alternative. It's built on top of dbt and lets users centralise all their team's business logic in one place. ", "one_liner": "The open source Looker alternative ", "team_size": 23, "industry": "B2B", "subindustry": "B2B -> Analytics", "launched_at": 1599762606, "tags": [ "Developer Tools", "B2B", "Analytics", "Open Source", "Data Visualization" ], "tags_highlighted": [], "top_company": false, "isHiring": true, "nonprofit": false, "batch": "Summer 2020", "status": "Active", "industries": [ "B2B", "Analytics" ], "regions": [ "United Kingdom", "Europe", "Remote", "Fully Remote" ], "stage": "Growth", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/hubble", "api": "https://yc-oss.github.io/api/batches/summer-2020/hubble.json" }, { "id": 21794, "name": "Shuttle", "slug": "shuttle", "former_names": [ "OpenQuery", "Synth", "shuttle" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/0c189cabb560e9c254a44aff2d8e3ff94ea9d36e.png", "website": "https://www.shuttle.dev", "all_locations": "London, England, United Kingdom", "long_description": "Our Mission 🎯\r\n\r\nAt Shuttle, we’re on a mission to revolutionise developer experience for building web apps. Everything we do is about crafting an exceptionally simple, satisfying and effective way to do cloud development. We are open source community-driven and loved by thousands of engineers. Our vision: the ultimate platform to supercharge developers’ productivity.\r\n\r\nAbout Shuttle 🚀\r\n\r\nShuttle is the cloud infrastructure platform for developers building with Cursor and GitHub Copilot. We make it simple to ship reliable and scalable backends, so developers can focus on creating great products.\r\n\r\nOver 20,000 developers use Shuttle to build and deploy Rust backends in minutes, and we’re now bringing the same zero-config experience to every developer. As AI tools like Cursor and GitHub Copilot accelerate coding, infrastructure is becoming the bottleneck - Shuttle removes it.", "one_liner": "Build Backends. Fast.", "team_size": 12, "industry": "B2B", "subindustry": "B2B -> Infrastructure", "launched_at": 1599762607, "tags": [ "Artificial Intelligence", "Developer Tools", "SaaS", "Open Source", "DevOps" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Summer 2020", "status": "Active", "industries": [ "B2B", "Infrastructure" ], "regions": [ "United Kingdom", "Europe", "Remote", "Partly Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/shuttle", "api": "https://yc-oss.github.io/api/batches/summer-2020/shuttle.json" }, { "id": 21795, "name": "QuestDB", "slug": "questdb", "former_names": [ "QuestDB Limited" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/3aef5c655cdc851ccad387554c204466a87669e7.png", "website": "https://questdb.com/", "all_locations": "London, England, United Kingdom", "long_description": "QuestDB is a high-performance open source database for the most demanding workloads. Native support for Parquet, Iceberg and SQL keeps your data portable, AI-ready, without vendor lock-in.\r\n\r\nQuestDB is designed from the ground up to operate as close to the hardware as possible - eliminating ingestion bottlenecks and lowering overall hardware requirements.\r\n\r\nQuestDB powers mission-critical infrastructure for companies in Capital Markets, Crypto, Space Exploration, Energy and Robotics/Physical AI.", "one_liner": "High-performance time series database", "team_size": 30, "industry": "B2B", "subindustry": "B2B -> Infrastructure", "launched_at": 1593714682, "tags": [ "Developer Tools", "Analytics", "Open Source", "Time Series" ], "tags_highlighted": [], "top_company": false, "isHiring": true, "nonprofit": false, "batch": "Summer 2020", "status": "Active", "industries": [ "B2B", "Infrastructure" ], "regions": [ "United Kingdom", "Europe", "Remote", "Partly Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/questdb", "api": "https://yc-oss.github.io/api/batches/summer-2020/questdb.json" }, { "id": 21858, "name": "Monosi", "slug": "monosi", "former_names": [ "Vocable", "Kosmos", "qz" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/a79a7e737458c49c901b1062ceb420254ed8ac77.png", "website": "https://monosi.dev", "all_locations": "San Francisco, CA, USA", "long_description": "Monosi is an extensible data observability platform that ensures teams achieve data reliability.", "one_liner": "Open Source Data Observability", "team_size": 2, "industry": "B2B", "subindustry": "B2B -> Engineering, Product and Design", "launched_at": 1598983823, "tags": [ "Developer Tools", "B2B", "Open Source", "Data Engineering" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Summer 2020", "status": "Inactive", "industries": [ "B2B", "Engineering, Product and Design" ], "regions": [ "United States of America", "America / Canada" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/monosi", "api": "https://yc-oss.github.io/api/batches/summer-2020/monosi.json" }, { "id": 21957, "name": "KeyDB", "slug": "keydb", "former_names": [ "EQ Alpha Technology", "KeyDB Inc." ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/b0ddabf66cf6f4f3a36b5e768350a5f89ef3693a.png", "website": "https://keydb.dev", "all_locations": "Toronto, ON, Canada", "long_description": "KeyDB is a fast key value database that combines in memory caching and FLASH persistence in a single package.", "one_liner": "The only database you'll ever need", "team_size": 2, "industry": "B2B", "subindustry": "B2B -> Infrastructure", "launched_at": 1598122411, "tags": [ "Open Source", "Databases" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Summer 2020", "status": "Acquired", "industries": [ "B2B", "Infrastructure" ], "regions": [ "Canada", "America / Canada" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/keydb", "api": "https://yc-oss.github.io/api/batches/summer-2020/keydb.json" }, { "id": 22091, "name": "Supabase", "slug": "supabase", "former_names": [], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/9e8c106f46123a6f28b7a7da41f0ee695da48786.png", "website": "https://supabase.com", "all_locations": "San Francisco, CA, USA; Remote", "long_description": "Supabase is the easiest way to get started with Postgres. \r\n\r\nEach project within Supabase is an isolated Postgres cluster, allowing customers to scale independently, while still providing the features that you need to build: instant database setup, auth, row level security, realtime data streams, auto-generating APIs, and a simple to use web interface.\r\n\r\nWe are 100% remote.\r\n\r\n", "one_liner": "Build in a weekend. Scale to millions.", "team_size": 120, "industry": "B2B", "subindustry": "B2B -> Infrastructure", "launched_at": 1596180346, "tags": [ "Developer Tools", "Open Source", "Big Data", "Data Engineering", "Databases" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Summer 2020", "status": "Active", "industries": [ "B2B", "Infrastructure" ], "regions": [ "United States of America", "America / Canada", "Remote", "Fully Remote" ], "stage": "Growth", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/supabase", "api": "https://yc-oss.github.io/api/batches/summer-2020/supabase.json" }, { "id": 22126, "name": "Mito", "slug": "mito", "former_names": [ "Saga", "Mtio" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/f1806ed31ccae256cd4739f203e4b05a30a49eea.png", "website": "http://trymito.io", "all_locations": "New York, NY, USA; Remote", "long_description": "Mito is Cursor for data science. We’re building an AI enabled IDE to 10x the productivity of data people. Data analysts use Mito to automate reports without relying on internal engineering resources. \r\n\r\nMito is used by thousands of business analysts, data scientists, and automation engineers at some of the world's largest banks, private equity shops, and consulting firms. \r\n\r\nOpen source is key to our enterprise sales strategy. Mito is open source and built on top of Jupyter. That means getting started with Mito is as simple as running `pip install` and doesn't require enterprises to manager new infrastructure. \r\n\r\nCheck us out at: https://www.trymito.io/", "one_liner": "Cursor for data analysis", "team_size": 3, "industry": "B2B", "subindustry": "B2B -> Analytics", "launched_at": 1660746128, "tags": [ "Developer Tools", "Analytics", "Open Source", "Data Science", "AI" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Summer 2020", "status": "Active", "industries": [ "B2B", "Analytics" ], "regions": [ "United States of America", "America / Canada", "Remote", "Fully Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/mito", "api": "https://yc-oss.github.io/api/batches/summer-2020/mito.json" }, { "id": 22533, "name": "Webiny", "slug": "webiny", "former_names": [], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/adfd1c33ceed7c9e58e31857fc68ab3c74ad1ad4.png", "website": "https://www.webiny.com", "all_locations": "London, England, United Kingdom; Remote", "long_description": "When the public cloud appeared migration was easy. Existing apps running on physical servers could just be moved to virtual machines running in the cloud. The cloud is now moving towards serverless, and serverless is not backward compatible. New tools need to be created and existing apps need to be rewritten. Webiny provides developers with everything they need to build those serverless apps.\r\n\r\nWe are a 100% remote team.", "one_liner": "Open-source framework for building serverless applications", "team_size": 6, "industry": "B2B", "subindustry": "B2B -> Engineering, Product and Design", "launched_at": 1615457343, "tags": [ "Developer Tools", "B2B", "Open Source" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Winter 2021", "status": "Active", "industries": [ "B2B", "Engineering, Product and Design" ], "regions": [ "United Kingdom", "Europe", "Remote", "Fully Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/webiny", "api": "https://yc-oss.github.io/api/batches/winter-2021/webiny.json" }, { "id": 22632, "name": "authzed", "slug": "authzed", "former_names": [ "Petricorp", "Inc." ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/ee578b781cb190a51362b9fda6dc57b36d74972d.png", "website": "https://authzed.com", "all_locations": "New York, NY, USA; Remote", "long_description": "We build the tools companies need to provide performant and scalable authorization for their applications.\r\n\r\nWe’re founded by 3 successful entrepreneurs with expertise in enterprise software, most recently as leaders at Red Hat. Jake and Joey met on the APIs team at Google in 2010. They went on to found Quay, where Jimmy joined as their first hire. Over the past decade, they’ve changed the landscape for building and deploying software.", "one_liner": "Authorization Infrastructure securing AI at OpenAI, Zoom, & more", "team_size": 31, "industry": "B2B", "subindustry": "B2B -> Engineering, Product and Design", "launched_at": 1624982412, "tags": [ "Artificial Intelligence", "Developer Tools", "Security", "Open Source", "Data Engineering" ], "tags_highlighted": [], "top_company": false, "isHiring": true, "nonprofit": false, "batch": "Winter 2021", "status": "Active", "industries": [ "B2B", "Engineering, Product and Design" ], "regions": [ "United States of America", "America / Canada", "Remote", "Fully Remote" ], "stage": "Growth", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/authzed", "api": "https://yc-oss.github.io/api/batches/winter-2021/authzed.json" }, { "id": 22671, "name": "SigNoz", "slug": "signoz", "former_names": [], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/bf9bf94469ea296eac6cbf6d10f7674c4a8a91ef.png", "website": "https://signoz.io", "all_locations": "San Francisco, CA, USA; Remote", "long_description": "SigNoz is an open-source observability platform native to OpenTelemetry with logs, traces and metrics in a single application. An open-source alternative to DataDog, NewRelic, etc. Open source Application Performance Monitoring (APM) & Observability too", "one_liner": "Open source alternative to DataDog ", "team_size": 38, "industry": "B2B", "subindustry": "B2B -> Infrastructure", "launched_at": 1613453474, "tags": [ "Developer Tools", "SaaS", "B2B", "Open Source" ], "tags_highlighted": [], "top_company": false, "isHiring": true, "nonprofit": false, "batch": "Winter 2021", "status": "Active", "industries": [ "B2B", "Infrastructure" ], "regions": [ "United States of America", "America / Canada", "Remote", "Fully Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/signoz", "api": "https://yc-oss.github.io/api/batches/winter-2021/signoz.json" }, { "id": 22741, "name": "Laudspeaker", "slug": "laudspeaker", "former_names": [ "Askly", "Tachyon" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/a3b42d39456545bb9b0fc5c6bcccfb598bd73cfb.png", "website": "https://laudspeaker.com/?ref=bf", "all_locations": "Mountain View, CA, USA; Remote", "long_description": "Open source mobile marketing automation and customer onboarding platform. Alternative to braze customer io / iterable / pendo / appcues . Segment and engage your users with complex scheduled push notification, sms and email campaigns.", "one_liner": "Open source mobile marketing platform. Alternative to appcues /…", "team_size": 3, "industry": "B2B", "subindustry": "B2B -> Marketing", "launched_at": 1611772724, "tags": [ "SaaS", "B2B", "Open Source", "Automation" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Winter 2021", "status": "Acquired", "industries": [ "B2B", "Marketing" ], "regions": [ "United States of America", "America / Canada", "Remote", "Fully Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/laudspeaker", "api": "https://yc-oss.github.io/api/batches/winter-2021/laudspeaker.json" }, { "id": 22986, "name": "SST", "slug": "sst", "former_names": [ "Anomaly Innovations", "SST", "Serverless Stack" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/4acd09521cfd92dc5dc54349811e3659f95a8c17.png", "website": "https://sst.dev", "all_locations": "Toronto, ON, Canada; Remote", "long_description": "Makers of sst.dev, opencode.ai, opennext.js.org, openauth.js.org, models.dev", "one_liner": "For whatever you build.", "team_size": 8, "industry": "B2B", "subindustry": "B2B -> Infrastructure", "launched_at": 1610830891, "tags": [ "Developer Tools", "Open Source" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Winter 2021", "status": "Active", "industries": [ "B2B", "Infrastructure" ], "regions": [ "Canada", "America / Canada", "Remote", "Fully Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/sst", "api": "https://yc-oss.github.io/api/batches/winter-2021/sst.json" }, { "id": 23229, "name": "Pyroscope", "slug": "pyroscope", "former_names": [ "Ignite" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/247a74da94904c06b274f1d233ed28b07bb00ee7.png", "website": "https://pyroscope.io/", "all_locations": "Oakland, CA, USA", "long_description": "Pyroscope is an open source continuous profiling platform. With just a few lines of code it will help you debug performance issues and find bottlenecks in your code.", "one_liner": "Open source continuous profiling software to debug performance issues", "team_size": 5, "industry": "B2B", "subindustry": "B2B -> Engineering, Product and Design", "launched_at": 1611939797, "tags": [ "Developer Tools", "SaaS", "Open Source", "Kubernetes" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Winter 2021", "status": "Acquired", "industries": [ "B2B", "Engineering, Product and Design" ], "regions": [ "United States of America", "America / Canada", "Remote", "Partly Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/pyroscope", "api": "https://yc-oss.github.io/api/batches/winter-2021/pyroscope.json" }, { "id": 23269, "name": "Lunatic", "slug": "lunatic", "former_names": [], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/ccbb6c762083b33171aef62dcf59e9b3e7d3113b.png", "website": "https://lunatic.solutions/", "all_locations": "Vienna, Vienna, Austria; Remote", "long_description": "At the core of the company there is Lunatic, a runtime for developing low latency, robust and distributed networking applications. It can be used for web applications, game servers, video and voice chat, or other apps requiring low latency runtimes. Lunatic borrows many proven ideas from Go and Erlang, but also uses WebAssembly to make it easier targetable from existing languages, allowing teams to leverage already existing code and libraries.", "one_liner": "Operating System for server-side apps", "team_size": 2, "industry": "B2B", "subindustry": "B2B -> Engineering, Product and Design", "launched_at": 1614684891, "tags": [ "Developer Tools", "SaaS", "Open Source" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Winter 2021", "status": "Inactive", "industries": [ "B2B", "Engineering, Product and Design" ], "regions": [ "Austria", "Europe", "Remote", "Fully Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/lunatic", "api": "https://yc-oss.github.io/api/batches/winter-2021/lunatic.json" }, { "id": 23270, "name": "Alokai", "slug": "alokai", "former_names": [ "Vue Storefront" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/e146a068595154f54b5d7dc8ec6ed0fecd7005ee.png", "website": "https://www.alokai.com", "all_locations": "Warsaw, Masovian Voivodeship, Poland; Remote", "long_description": "Alokai is an award-winning and pioneering global technology startup setting a new standard in online shopping. Alokai is a Frontend as a Service solution that simplifies composable commerce. It connects all the technologies needed to build and deploy fast & scalable ecommerce frontends.Founded in 2021, Alokai (prev. Vue Storefront) is a best-in-class composable commerce solution and market-leading Frontend as a Service currently used by 3000+ live stores around the world. With a remote, global team of 100+ people and offices in San Francisco and Warsaw, Poland, customers include Movado, SPAR Inc., or Brompton Bikes. Supported by 130+ partners and a community of 10,000+ developers, Alokai and its leaders are recipients of several industry awards, including Europe’s top tech startup prize and recognition from Forbes magazine.", "one_liner": "Frontend Platform for eCommerce", "team_size": 100, "industry": "B2B", "subindustry": "B2B -> Engineering, Product and Design", "launched_at": 1616792795, "tags": [ "Developer Tools", "Open Source", "E-commerce" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Winter 2021", "status": "Active", "industries": [ "B2B", "Engineering, Product and Design" ], "regions": [ "Poland", "Europe", "Remote", "Fully Remote" ], "stage": "Growth", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/alokai", "api": "https://yc-oss.github.io/api/batches/winter-2021/alokai.json" }, { "id": 23279, "name": "Chatwoot", "slug": "chatwoot", "former_names": [], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/de9da9b7b526c451e6b6c447527e638ebaf7d27f.png", "website": "https://www.chatwoot.com", "all_locations": "San Francisco, CA, USA; Remote", "long_description": "Chatwoot is an AI-powered customer support platform that enables businesses to deliver exceptional support experiences. Built as a modern, open-source, and self-hosted alternative to tools like Intercom and Zendesk, Chatwoot brings all your customer conversations into one place. You can connect email, website live chat, social media accounts, WhatsApp, and more, making it easy to manage every interaction from a single, unified platform.", "one_liner": "The modern, open source, self-hosted AI customer support platform", "team_size": 12, "industry": "B2B", "subindustry": "B2B -> Operations", "launched_at": 1614018154, "tags": [ "B2B", "Customer Success", "Open Source", "Customer Service", "Customer Support" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Winter 2021", "status": "Active", "industries": [ "B2B", "Operations" ], "regions": [ "United States of America", "America / Canada", "Remote", "Fully Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/chatwoot", "api": "https://yc-oss.github.io/api/batches/winter-2021/chatwoot.json" }, { "id": 23280, "name": "Infracost", "slug": "infracost", "former_names": [], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/fe6b97eef16a2d22e437f6cf663c11b64b223fc8.png", "website": "https://infracost.io", "all_locations": "Remote", "long_description": "Infracost shifts cloud costs left and makes FinOps proactive. It sits in the engineering workflow (CI/CD), and shows the cost impact of code changes (IaC) before the code is shipped to production. This catches costly mistakes before any money has been spent. It also checks to make sure all resources are tagged with your set tagging policy, and runs checks on the code against our FinOps policy packs, ensuring best practices are followed (e.g. using Graviton processors and storage lifecycle rules).\r\n\r\nThis creates a cost-aware engineering culture.", "one_liner": "Shift FinOps Left: Proactively Find & Fix Cloud Cost Issues", "team_size": 20, "industry": "B2B", "subindustry": "B2B -> Engineering, Product and Design", "launched_at": 1613727779, "tags": [ "Developer Tools", "DevSecOps", "FinOps", "B2B", "Open Source" ], "tags_highlighted": [], "top_company": false, "isHiring": true, "nonprofit": false, "batch": "Winter 2021", "status": "Active", "industries": [ "B2B", "Engineering, Product and Design" ], "regions": [ "Remote", "Fully Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": true, "url": "https://www.ycombinator.com/companies/infracost", "api": "https://yc-oss.github.io/api/batches/winter-2021/infracost.json" }, { "id": 23355, "name": "Svix", "slug": "svix", "former_names": [ "Etebase", "Diahook" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/e7fe48d854a5e26f76b915462fef2c4d177bfa49.png", "website": "https://www.svix.com", "all_locations": "San Francisco, CA, USA", "long_description": "Svix is the enterprise ready and open source webhooks service.\r\n\r\nWebhooks are a pain. Developers need to worry about deliverability, retries, monitoring and security. All of which are different for webhooks compared to the rest of the stack. We turn all of that into a simple API call.\r\n\r\nSvix is sending billions of webhooks for customers both large (Fortune 500) and small (startups), and is backed by Y Combinator, Andreessen Horowitz (a16z), Aleph, and founders and CTOs of companies such as Github, PagerDuty, Segment and Lookout.", "one_liner": "Enterprise ready webhooks service, open-source and in the cloud", "team_size": 12, "industry": "B2B", "subindustry": "B2B -> Infrastructure", "launched_at": 1614619070, "tags": [ "Developer Tools", "Open Source", "API" ], "tags_highlighted": [], "top_company": false, "isHiring": true, "nonprofit": false, "batch": "Winter 2021", "status": "Active", "industries": [ "B2B", "Infrastructure" ], "regions": [ "United States of America", "America / Canada", "Remote", "Partly Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/svix", "api": "https://yc-oss.github.io/api/batches/winter-2021/svix.json" }, { "id": 23452, "name": "Wasp", "slug": "wasp", "former_names": [], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/c0dfc65176d7169b24399e9ad69bc08681240583.png", "website": "https://wasp-lang.dev/", "all_locations": "Zagreb, Croatia; Remote", "long_description": "Wasp is a simple configuration language for building enterprise web apps with less code and best practices. If a developer wants to build an app like Instacart, they need to know a dozen different technologies and how to make them work together - Wasp solves this problem while still letting developers use React, Node.js and their other favourite tools.\r\n\r\nWe will enable enterprises to build modern apps quickly at scale, like Databricks did for data management.", "one_liner": "Configuration language for building enterprise web apps 10x faster", "team_size": 2, "industry": "B2B", "subindustry": "B2B -> Engineering, Product and Design", "launched_at": 1613050729, "tags": [ "Developer Tools", "Open Source" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Winter 2021", "status": "Active", "industries": [ "B2B", "Engineering, Product and Design" ], "regions": [ "Croatia", "Europe", "Remote", "Fully Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/wasp", "api": "https://yc-oss.github.io/api/batches/winter-2021/wasp.json" }, { "id": 23634, "name": "Ollama", "slug": "ollama", "former_names": [ "Name TBD", "Infra" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/c1121bda8391be946b0390232fa3c953a095536e.png", "website": "https://ollama.com", "all_locations": "San Francisco, CA, USA", "long_description": "", "one_liner": "Get up and running with large language models.", "team_size": null, "industry": "B2B", "subindustry": "B2B -> Infrastructure", "launched_at": 1652795204, "tags": [ "Artificial Intelligence", "Developer Tools", "Open Source" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Winter 2021", "status": "Active", "industries": [ "B2B", "Infrastructure" ], "regions": [ "United States of America", "America / Canada" ], "stage": "Growth", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/ollama", "api": "https://yc-oss.github.io/api/batches/winter-2021/ollama.json" }, { "id": 23943, "name": "Artillery", "slug": "artillery", "former_names": [ "Artillery.io" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/a011d32c00bf7c32117a20c6a43d0231717faeea.png", "website": "https://www.artillery.io", "all_locations": "Limerick, County Limerick, Ireland; Remote", "long_description": "Supercharge your Playwright E2E testing, run scalable load tests, and automate production monitoring with synthetic checks — all in one platform. Built for engineering teams who want to ship fast without performance & reliability risks.\r\n\r\nUsed by thousands of developer teams to help keep their production systems fast & reliable.", "one_liner": "The complete production quality platform. AI-powered E2E testing,…", "team_size": 5, "industry": "B2B", "subindustry": "B2B -> Infrastructure", "launched_at": 1628687851, "tags": [ "Developer Tools", "SaaS", "Open Source", "DevOps" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Summer 2021", "status": "Active", "industries": [ "B2B", "Infrastructure" ], "regions": [ "Ireland", "Europe", "Remote", "Fully Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/artillery", "api": "https://yc-oss.github.io/api/batches/summer-2021/artillery.json" }, { "id": 23950, "name": "Pipekit", "slug": "pipekit", "former_names": [], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/04ac699768ee01bea09ec4c32c01f02b31efebd7.png", "website": "https://pipekit.io", "all_locations": "Remote", "long_description": "Our app manages Argo Workflows for data teams, enabling complex data &\r\n CI pipelines in half the time while saving companies hundreds of thousands of dollars annually. We maintain Argo Workflows, an open-source pipeline framework for Kubernetes that’s used in production by Bloomberg, Intuit, Adobe, New Relic, NVIDIA, and many other open-source early adopters. ", "one_liner": "Pipekit scales data & CI pipelines for enterprises", "team_size": 9, "industry": "B2B", "subindustry": "B2B -> Infrastructure", "launched_at": 1630089531, "tags": [ "Developer Tools", "Open Source", "Data Engineering", "DevOps" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Summer 2021", "status": "Active", "industries": [ "B2B", "Infrastructure" ], "regions": [ "Remote", "Fully Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/pipekit", "api": "https://yc-oss.github.io/api/batches/summer-2021/pipekit.json" }, { "id": 24151, "name": "Lago", "slug": "lago", "former_names": [], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/29939f1cfbd3fe315d3ded8f43c33775de6b9c89.png", "website": "https://www.getlago.com/", "all_locations": "San Francisco, CA, USA", "long_description": "At Lago, we're on a mission to make billing simpler, more transparent, and more adaptable for SaaS companies.\r\n\r\nAs the leading open-source billing platform, we empower businesses to build flexible pricing models and scale with confidence. We've raised over $22 million in funding from top-tier investors including Y Combinator and FirstMark, reflecting strong confidence in our vision and growth.\r\n\r\nOur platform has garnered over 9,000 stars on GitHub, a testament to our active and growing developer community. Companies such as PayPal, Synthesia and Mistral.ai choose Lago for their billing.\r\n\r\nWe're a team of ambitious, focused individuals who work together to solve hard problems with excellence and accountability. At Lago, we value reliability and proactivity - we trust each other to own tasks, drive them to completion, and adapt quickly. While we encourage you to try fast and \"fail fast\", we also expect you to learn fast: make mistakes, but don't make the same one twice.\r\n\r\nIf you're excited by challenges and want to grow alongside a high-performing, supportive team, this is the place for you.", "one_liner": "The AI Native Billing Platform", "team_size": 45, "industry": "B2B", "subindustry": "B2B -> Finance and Accounting", "launched_at": 1629092704, "tags": [ "FinOps", "Fintech", "SaaS", "Open Source", "Billing" ], "tags_highlighted": [], "top_company": false, "isHiring": true, "nonprofit": false, "batch": "Summer 2021", "status": "Active", "industries": [ "B2B", "Finance and Accounting" ], "regions": [ "United States of America", "America / Canada", "Remote", "Partly Remote" ], "stage": "Growth", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/lago", "api": "https://yc-oss.github.io/api/batches/summer-2021/lago.json" }, { "id": 24270, "name": "Enso", "slug": "enso", "former_names": [], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/b6759a6164c3fd0594119ff78b7d4a6206f80f1b.png", "website": "https://ensoanalytics.com", "all_locations": "Kraków, Lesser Poland Voivodeship, Poland; Remote", "long_description": "Enso Analytics is a self-service data prep and analysis platform for data teams. It transforms complex processes into repeatable workflows, saving users 7 hours weekly. With full configuration visibility, seamless environment transitions, and real-time updates, Enso caters to both non-programmers and developers, offering cloud and desktop options.\r\n\r\nDEMO: https://www.youtube.com/watch?v=OBrYjpgCSEE", "one_liner": "Self-Service Data Prep and Blend Built for Data Teams.", "team_size": 20, "industry": "B2B", "subindustry": "B2B -> Analytics", "launched_at": 1624612167, "tags": [ "SaaS", "Open Source" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Summer 2021", "status": "Active", "industries": [ "B2B", "Analytics" ], "regions": [ "Poland", "Europe", "Remote", "Fully Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/enso", "api": "https://yc-oss.github.io/api/batches/summer-2021/enso.json" }, { "id": 24379, "name": "Formance", "slug": "formance", "former_names": [ "Goldilocks", "Numary (ex Goldilocks)", "Numary", "Formance (fka Numary)" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/d2bd98c7cb8de435d88c71bda24056e4db21bc5f.png", "website": "https://formance.com", "all_locations": "Paris, Île-de-France, France", "long_description": "Formance Platform is building open-source infrastructure for the next wave of financial services. It enables fintech engineers to build and operate complex flow of funds, weaving together multiple payment rails with internal ledger accounts.\r\n\r\ngithub.com/formancehq/stack", "one_liner": "Open Source Infrastructure for the Financial Internet", "team_size": 30, "industry": "B2B", "subindustry": "B2B", "launched_at": 1626469942, "tags": [ "Developer Tools", "Fintech", "Payments", "B2B", "Open Source" ], "tags_highlighted": [], "top_company": false, "isHiring": true, "nonprofit": false, "batch": "Summer 2021", "status": "Active", "industries": [ "B2B" ], "regions": [ "France", "Europe", "Remote", "Partly Remote" ], "stage": "Growth", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/formance", "api": "https://yc-oss.github.io/api/batches/summer-2021/formance.json" }, { "id": 24484, "name": "Evidently AI", "slug": "evidently-ai", "former_names": [], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/ff0b16931b863f29fd0bd341fe033523a5e16dd6.png", "website": "https://evidentlyai.com", "all_locations": "London, England, United Kingdom; San Francisco, CA, USA; Remote", "long_description": "We are building an open-source standard to monitor ML models in production. The tool is used by enterprise data science teams to operate their models reliably and detect and resolve issues.", "one_liner": "Open-source monitoring for machine learning models", "team_size": 2, "industry": "B2B", "subindustry": "B2B -> Analytics", "launched_at": 1625666125, "tags": [ "Developer Tools", "Machine Learning", "B2B", "Open Source" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Summer 2021", "status": "Active", "industries": [ "B2B", "Analytics" ], "regions": [ "United Kingdom", "United States of America", "Europe", "America / Canada", "Remote", "Fully Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/evidently-ai", "api": "https://yc-oss.github.io/api/batches/summer-2021/evidently-ai.json" }, { "id": 24507, "name": "Warrant", "slug": "warrant", "former_names": [], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/0463ea40224ab10e82c931c492806150172da7a0.png", "website": "https://warrant.dev/", "all_locations": "Los Angeles, CA, USA; San Francisco, CA, USA; Remote", "long_description": "Warrant is an open source authorization service that helps developers implement and enforce access control in their applications. Warrant serves as a dedicated, centralized platform for handling user authorization and access control so engineering teams can focus on building their core products.", "one_liner": "Authorization and access control as a service.", "team_size": 3, "industry": "B2B", "subindustry": "B2B -> Infrastructure", "launched_at": 1625099356, "tags": [ "Developer Tools", "B2B", "Open Source", "API" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Summer 2021", "status": "Acquired", "industries": [ "B2B", "Infrastructure" ], "regions": [ "United States of America", "America / Canada", "Remote", "Fully Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/warrant", "api": "https://yc-oss.github.io/api/batches/summer-2021/warrant.json" }, { "id": 24616, "name": "Vibe Kanban", "slug": "vibe-kanban", "former_names": [ "bloop" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/773b39b8261f5827258bdc470dd1356bfb4e9ee4.png", "website": "https://vibekanban.com", "all_locations": "London, England, United Kingdom", "long_description": "As AI agents become more capable at writing code, developers are spending more of their time planning and reviewing what those agents produce. Vibe Kanban helps them do exactly that, seamlessly integrating with leading coding agents like Anthropic’s Claude Code and OpenAI’s Codex.", "one_liner": "Plan and review AI generated code", "team_size": 10, "industry": "B2B", "subindustry": "B2B -> Engineering, Product and Design", "launched_at": 1629492105, "tags": [ "Artificial Intelligence", "Machine Learning", "Open Source" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Summer 2021", "status": "Active", "industries": [ "B2B", "Engineering, Product and Design" ], "regions": [ "United Kingdom", "Europe" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/vibe-kanban", "api": "https://yc-oss.github.io/api/batches/summer-2021/vibe-kanban.json" }, { "id": 25174, "name": "GrowthBook", "slug": "growthbook", "former_names": [ "Growth Book" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/4c060531ea33b3550b25532f59de594cc620f374.png", "website": "https://www.growthbook.io", "all_locations": "Palo Alto, CA, USA; Remote", "long_description": "GrowthBook is an open source platform to help companies make data-driven product decisions with feature flags and A/B tests. \r\n\r\nExisting SaaS solutions like LaunchDarkly require a company to send all of their data to them. This results in high costs, data compliance issues, and vendor lock-in. As a result, many companies end up building their own platforms in-house, which can take thousands of hours of work and lots of headaches. To solve this, GrowthBook uses a company's existing data infrastructure and business metrics.\r\n\r\nWe believe feature flags and experimentation are the right way to build products at scale and that they will become a standard part of the development process. GrowthBook is well positioned to be a leader in this growing market.", "one_liner": "Open source feature flagging and A/B testing", "team_size": 40, "industry": "B2B", "subindustry": "B2B -> Analytics", "launched_at": 1645834859, "tags": [ "Developer Tools", "B2B", "Analytics", "Open Source" ], "tags_highlighted": [], "top_company": false, "isHiring": true, "nonprofit": false, "batch": "Winter 2022", "status": "Active", "industries": [ "B2B", "Analytics" ], "regions": [ "United States of America", "America / Canada", "Remote", "Fully Remote" ], "stage": "Growth", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/growthbook", "api": "https://yc-oss.github.io/api/batches/winter-2022/growthbook.json" }, { "id": 25402, "name": "Rownd", "slug": "rownd", "former_names": [ "Rownd", "LlamaFarm" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/8c9dcd6e10984a18f91f153e7efc538957c387fd.png", "website": "https://rownd.ai", "all_locations": "Raleigh, NC, USA", "long_description": "Rownd AI builds fully autonomous drones that use local edge intelligence and global LTE/5G/SatCom failover to eliminate the 1:1 pilot bottleneck anywhere on earth or space. We are currently field-deployed with active customers across U.S. Special Operations Command (SOCOM) via our defense business line, ArcEdge AI. Operating out of Raleigh, NC and Wisconsin, we leveraged our team's background in mobile hardware optimization and zero-trust architectures to build true cognitive autonomy directly onto physical aircraft. While we are heavily focused on defense technology today, our ultimate mission is scaling this physical autonomous infrastructure across commercial enterprise edge applications.", "one_liner": "Fully autonomous defense solutions for the global edge.", "team_size": 7, "industry": "Industrials", "subindustry": "Industrials -> Drones", "launched_at": 1643295526, "tags": [ "Drones", "Open Source", "AI", "ML" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Winter 2022", "status": "Active", "industries": [ "Industrials", "Drones" ], "regions": [ "United States of America", "America / Canada", "Remote", "Partly Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/rownd", "api": "https://yc-oss.github.io/api/batches/winter-2022/rownd.json" }, { "id": 25542, "name": "Elementary", "slug": "elementary", "former_names": [], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/45aadc83c7554b356da35bb6d48a350f575804b2.png", "website": "http://elementary-data.com/", "all_locations": "Tel Aviv-Yafo, Tel Aviv District, Israel", "long_description": "Elementary enables data teams to detect problems in their data before their users do. An open-source solution that any data engineer can deploy in minutes without sharing sensitive data.", "one_liner": "Open-source data observability for data teams", "team_size": 12, "industry": "B2B", "subindustry": "B2B -> Analytics", "launched_at": 1647515701, "tags": [ "Developer Tools", "Analytics", "Open Source", "Data Engineering" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Winter 2022", "status": "Active", "industries": [ "B2B", "Analytics" ], "regions": [ "Israel", "Middle East and North Africa" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/elementary", "api": "https://yc-oss.github.io/api/batches/winter-2022/elementary.json" }, { "id": 25552, "name": "Firezone", "slug": "firezone", "former_names": [], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/d77ec2f6117521699894a917f49c85927da9cf8f.png", "website": "https://www.firezone.dev", "all_locations": "San Francisco, CA, USA", "long_description": "Firezone connects your workforce to the computing resources they need, wherever they are, securely. Unlike traditional VPNs, Firezone uses a least-privileged approach to access control known as Zero Trust Access.\r\n\r\nConnect your identity provider and define granular policies in minutes, then rejoice in the IT support requests you won't receive due to our lightweight, WireGuard-powered clients which work great on all platforms.", "one_liner": "Easiest way to set up Zero Trust Access for your team", "team_size": 3, "industry": "B2B", "subindustry": "B2B -> Security", "launched_at": 1646247402, "tags": [ "DevSecOps", "Next-gen Network Security", "B2B", "Security", "Open Source" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Winter 2022", "status": "Active", "industries": [ "B2B", "Security" ], "regions": [ "United States of America", "America / Canada", "Remote", "Partly Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/firezone", "api": "https://yc-oss.github.io/api/batches/winter-2022/firezone.json" }, { "id": 25561, "name": "LanceDB", "slug": "lancedb", "former_names": [ "ETO", "Eto" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/7b3b44ab11047bbfddb4bfe44c9d2d3c87027258.png", "website": "https://lancedb.com", "all_locations": "San Francisco, CA, USA", "long_description": "LanceDB is a new open-source vector database that can support low-latency billion-scale vector search on a single node. Built around a new columnar data format, LanceDB makes it incredibly easy to build applications for generative AI, recsys, search engines, content moderation, and more.", "one_liner": "Open-source, serverless vectordb for production-scale generative AI", "team_size": 35, "industry": "B2B", "subindustry": "B2B -> Infrastructure", "launched_at": 1648263864, "tags": [ "AIOps", "Machine Learning", "Open Source", "Data Engineering" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Winter 2022", "status": "Active", "industries": [ "B2B", "Infrastructure" ], "regions": [ "United States of America", "America / Canada", "Remote", "Partly Remote" ], "stage": "Growth", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/lancedb", "api": "https://yc-oss.github.io/api/batches/winter-2022/lancedb.json" }, { "id": 25575, "name": "Beam", "slug": "beam", "former_names": [ "Slai" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/cf7324872fe6b37d7579334928f7018d2099483b.png", "website": "https://beam.cloud", "all_locations": "New York, NY, USA", "long_description": "Beam is cloud platform for AI inference, sandboxes, and agents.", "one_liner": "AI-Native Cloud Platform", "team_size": 5, "industry": "B2B", "subindustry": "B2B -> Infrastructure", "launched_at": 1641494547, "tags": [ "Artificial Intelligence", "Developer Tools", "Open Source", "Cloud Computing" ], "tags_highlighted": [], "top_company": false, "isHiring": true, "nonprofit": false, "batch": "Winter 2022", "status": "Active", "industries": [ "B2B", "Infrastructure" ], "regions": [ "United States of America", "America / Canada", "Remote", "Partly Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/beam", "api": "https://yc-oss.github.io/api/batches/winter-2022/beam.json" }, { "id": 25690, "name": "Requestly", "slug": "requestly", "former_names": [], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/397665634f98c5b29320b633cf76ae515930481f.png", "website": "https://requestly.com", "all_locations": "San Francisco, CA, USA; Remote", "long_description": "Requestly helps developers build faster by intercepting, mocking, and testing API responses. No more waiting for backend developers, struggling with flaky staging environments, or fighting over API contracts. With 200,000+ active installs, Requestly is trusted by Google, Amazon, Workday, Indeed, and many other Fortune 500 companies.", "one_liner": "Open-Source Postman alternative", "team_size": 19, "industry": "B2B", "subindustry": "B2B -> Engineering, Product and Design", "launched_at": 1639034757, "tags": [ "Developer Tools", "SaaS", "Open Source", "API" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Winter 2022", "status": "Acquired", "industries": [ "B2B", "Engineering, Product and Design" ], "regions": [ "United States of America", "America / Canada", "Remote", "Fully Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": true, "question_answers": true, "url": "https://www.ycombinator.com/companies/requestly", "api": "https://yc-oss.github.io/api/batches/winter-2022/requestly.json" }, { "id": 25720, "name": "Convoy", "slug": "convoy-2", "former_names": [ "Frain Technologies" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/2ef5e56e5aadbe1bd56567cef7d719b7f1e4c6b7.png", "website": "https://getconvoy.io", "all_locations": "London, England, United Kingdom; LA, Nigeria; Remote", "long_description": "We are building Convoy for engineering teams that value efficiency, especially during this bear market. \r\n\r\nYou might already know about API Gateways. Convoy is exactly that for webhooks.\r\n\r\nEngineering teams today use Convoy to securely send, receive and manage millions of webhooks reliably with robust support for retries, rate limiting, static IPs, circuit breaking, rolling secrets and more.\r\n\r\nWe know both receiving and sending webhooks can become a lot of work to manage, we have built a product to enable engineers to build and ship highly scalable stripe-like webhooks infrastructure.", "one_liner": "Webhooks Gateway for outgoing and incoming webhooks.", "team_size": 8, "industry": "B2B", "subindustry": "B2B -> Engineering, Product and Design", "launched_at": 1643184279, "tags": [ "Developer Tools", "B2B", "Open Source" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Winter 2022", "status": "Active", "industries": [ "B2B", "Engineering, Product and Design" ], "regions": [ "United Kingdom", "Nigeria", "Europe", "Africa", "Remote", "Fully Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/convoy-2", "api": "https://yc-oss.github.io/api/batches/winter-2022/convoy-2.json" }, { "id": 25738, "name": "Hydra", "slug": "hydra", "former_names": [], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/87c0954c151aa7067e034d8de33b3174d43f5ff0.png", "website": "https://hydra.so", "all_locations": "San Francisco, CA, USA; Remote", "long_description": "Hydra is a real-time analytics database management system for Postgres. We seperate compute from storage to offer software engineers serverless analytics with autoscale, write isolation, automatic caching, and more.\r\n\r\nShipping scalable projects on time series and event data has never been easier. Hydra is available for local development, cloud, and bare metal deployment.", "one_liner": "Serverless Analytics on Postgres", "team_size": 6, "industry": "B2B", "subindustry": "B2B -> Infrastructure", "launched_at": 1642199733, "tags": [ "Developer Tools", "Analytics", "Open Source", "Data Engineering" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Winter 2022", "status": "Acquired", "industries": [ "B2B", "Infrastructure" ], "regions": [ "United States of America", "America / Canada", "Remote", "Fully Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/hydra", "api": "https://yc-oss.github.io/api/batches/winter-2022/hydra.json" }, { "id": 25777, "name": "BotCity", "slug": "botcity", "former_names": [], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/7c9d51d01f280768899d76eff8f510583a2e1614.png", "website": "https://botcity.dev", "all_locations": "San Francisco, CA, USA; Remote", "long_description": "BotCity is a centralized platform that unifies Python scripts generated by AI or humans under a single governance framework, enabling organizations to scale with orchestration, observability, security and governance.", "one_liner": "Observability and Governance for AI-Generated Python scripts.", "team_size": 35, "industry": "B2B", "subindustry": "B2B -> Engineering, Product and Design", "launched_at": 1644846609, "tags": [ "Developer Tools", "Open Source", "Infrastructure", "AI" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Winter 2022", "status": "Active", "industries": [ "B2B", "Engineering, Product and Design" ], "regions": [ "United States of America", "America / Canada", "Remote", "Fully Remote" ], "stage": "Growth", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/botcity", "api": "https://yc-oss.github.io/api/batches/winter-2022/botcity.json" }, { "id": 26049, "name": "Netmaker", "slug": "netmaker", "former_names": [ "Gravitl" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/b3c3a99ff41b4e029c9cc8c8084119c4e97eb919.png", "website": "https://netmaker.io", "all_locations": "Asheville, NC, USA", "long_description": "Netmaker is an open source virtual networking platform based on WireGuard. With Netmaker, you can bridge, clouds, the edge, IoT devices, and Kubernetes clusters. Netmaker provides the fastest possible virtual networks, with an average speed 10x faster than standard alternatives. Think of Netmaker like your VPC for distributed systems.", "one_liner": "Automated WireGuard networks for distributed systems and Kubernetes", "team_size": 7, "industry": "B2B", "subindustry": "B2B -> Infrastructure", "launched_at": 1639687708, "tags": [ "DevSecOps", "Next-gen Network Security", "Open Source", "Kubernetes" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Winter 2022", "status": "Active", "industries": [ "B2B", "Infrastructure" ], "regions": [ "United States of America", "America / Canada", "Remote", "Partly Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/netmaker", "api": "https://yc-oss.github.io/api/batches/winter-2022/netmaker.json" }, { "id": 26413, "name": "Medplum", "slug": "medplum", "former_names": [], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/4229dd6804f5d73a29c33ab5b98b1cf482e0ea34.png", "website": "https://www.medplum.com", "all_locations": "San Francisco, CA, USA", "long_description": "Medplum makes it easy to build healthcare webapps that are compliant and interoperability ready. Our open source toolkit allows healthcare providers write apps that are HIPAA compliant, SOC2 certified and FHIR native - streamlining payor connections, health system integrations and more. ", "one_liner": "API first electronic health record (EHR) that is open source", "team_size": 20, "industry": "Healthcare", "subindustry": "Healthcare -> Healthcare IT", "launched_at": 1659548315, "tags": [ "Developer Tools", "Open Source", "Healthcare" ], "tags_highlighted": [], "top_company": false, "isHiring": true, "nonprofit": false, "batch": "Summer 2022", "status": "Active", "industries": [ "Healthcare", "Healthcare IT" ], "regions": [ "United States of America", "America / Canada", "Remote", "Partly Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/medplum", "api": "https://yc-oss.github.io/api/batches/summer-2022/medplum.json" }, { "id": 26657, "name": "HyperDX", "slug": "hyperdx", "former_names": [ "DeploySentinel" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/d08fa4a9e984544038c06b9790dd7d376a594c35.png", "website": "https://hyperdx.io/", "all_locations": "San Mateo, CA, USA", "long_description": "HyperDX assists engineers in resolving production bugs more quickly with simple workflows that take you from alert to resolution. You can get set up in a matter of minutes and correlate debug telemetry all in one place, including logs, metrics, traces, and browser session replays, allowing you to resolve issues faster than ever before.\r\n\r\nHyperDX is open source and built on top of Clickhouse and S3, so customers can enjoy ten times the savings when compared to traditional vendors like Datadog.", "one_liner": "Open-source, dev-friendly observability.", "team_size": 4, "industry": "B2B", "subindustry": "B2B -> Engineering, Product and Design", "launched_at": 1657691194, "tags": [ "Developer Tools", "SaaS", "B2B", "Open Source", "Infrastructure" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Summer 2022", "status": "Acquired", "industries": [ "B2B", "Engineering, Product and Design" ], "regions": [ "United States of America", "America / Canada", "Remote", "Partly Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/hyperdx", "api": "https://yc-oss.github.io/api/batches/summer-2022/hyperdx.json" }, { "id": 26705, "name": "Stackup", "slug": "stackup", "former_names": [], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/38fd40d4e57e1156a5bd35a1847bcef93e0e3b85.png", "website": "https://www.stackup.fi", "all_locations": "Los Angeles, CA, USA; Remote", "long_description": "Stackup is transforming how businesses manage their on-chain operations by offering a smart account platform designed to simplify and automate complex blockchain tasks. As the need for seamless, secure, and efficient crypto transactions grows, Stackup provides centralized control over decentralized assets, allowing businesses to take charge of every detail of their operations with ease. Our platform integrates advanced security and adaptive features to eliminate the chaos of traditional crypto wallets, empowering businesses to manage their crypto stack in real-time. Whether you’re orchestrating large-scale transactions or ensuring complete transparency, Stackup’s solution brings order and precision to blockchain management—turning crypto chaos into structured, seamless business flow.", "one_liner": "Stackup helps businesses manage their crypto assets.", "team_size": 4, "industry": "B2B", "subindustry": "B2B -> Engineering, Product and Design", "launched_at": 1653642506, "tags": [ "Developer Tools", "SaaS", "Crypto / Web3", "B2B", "Open Source" ], "tags_highlighted": [ "Crypto / Web3" ], "top_company": false, "isHiring": true, "nonprofit": false, "batch": "Summer 2022", "status": "Active", "industries": [ "B2B", "Engineering, Product and Design" ], "regions": [ "United States of America", "America / Canada", "Remote", "Fully Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/stackup", "api": "https://yc-oss.github.io/api/batches/summer-2022/stackup.json" }, { "id": 26709, "name": "Dittofeed", "slug": "dittofeed", "former_names": [ "Plinth", "Plinth Financial" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/b22d1c28c768e382c5e7543fe2dbe66969ea4adf.png", "website": "http://dittofeed.com", "all_locations": "Los Angeles, CA, USA; Remote", "long_description": "Dittofeed is an open-source alternative to platforms like Klaviyo and Customer.io. Self-host us for free, or use our low-cost cloud offering to automate messages across email, SMS, mobile push, WhatsApp, and more. \r\n\r\nWe also offer solutions for embedding Dittofeed in your own SaaS! Instantly provide your customers with automated messaging tools.", "one_liner": "Open-source customer engagement & messaging automation", "team_size": 2, "industry": "B2B", "subindustry": "B2B -> Marketing", "launched_at": 1676327834, "tags": [ "B2B", "Messaging", "Open Source" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Summer 2022", "status": "Active", "industries": [ "B2B", "Marketing" ], "regions": [ "United States of America", "America / Canada", "Remote", "Fully Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/dittofeed", "api": "https://yc-oss.github.io/api/batches/summer-2022/dittofeed.json" }, { "id": 26792, "name": "Activepieces", "slug": "activepieces", "former_names": [], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/0e3da00ac0f6b66a7e896be53679d01b6fe5fd45.png", "website": "https://www.activepieces.com", "all_locations": "San Francisco, CA, USA", "long_description": "Activepieces is an open-source (MIT) business automation software.\r\nFor example, you can build automations to receive email and Slack notifications about new contacts add to your HubSpot CRM.", "one_liner": "Open-source, AI-first and no-code business automation tool", "team_size": 10, "industry": "B2B", "subindustry": "B2B -> Engineering, Product and Design", "launched_at": 1657116357, "tags": [ "Workflow Automation", "Open Source", "No-code", "Enterprise Software", "AI" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Summer 2022", "status": "Active", "industries": [ "B2B", "Engineering, Product and Design" ], "regions": [ "United States of America", "America / Canada", "Remote", "Partly Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/activepieces", "api": "https://yc-oss.github.io/api/batches/summer-2022/activepieces.json" }, { "id": 26793, "name": "Windmill", "slug": "windmill", "former_names": [ "Windmill.dev" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/65ba001ab4d9a51e57b2d599e1b3c910c0a39b01.png", "website": "https://windmill.dev", "all_locations": "Paris, Île-de-France, France", "long_description": "Windmill is an open-source developer platform that turns scripts into workflows, internal tools, and full-stack apps.\r\n\r\nWrite scripts in Python, TypeScript, Go, Bash, Rust, SQL - Windmill auto-generates UIs from their parameters, handles dependencies, credentials, permissions, and scheduling so you focus on business logic, not infra.\r\n \r\nOpen-source alternative to Airflow, Temporal, Retool and n8n. Chain scripts into flows with branching, parallelism, retries. Build dashboards with the app builder. Trigger via cron, webhook, or UI. All-in-one runtime, editor, secret manager, and OAuth platform - enterprise-ready out of the box.\r\n \r\nStack: Rust / TypeScript + Svelte / PostgreSQL. Self-hostable, easy to deploy, built for performance and DX.", "one_liner": "Open-source platform to turn scripts into internal apps & workflows", "team_size": 7, "industry": "B2B", "subindustry": "B2B -> Infrastructure", "launched_at": 1651798285, "tags": [ "Developer Tools", "SaaS", "B2B", "Workflow Automation", "Open Source" ], "tags_highlighted": [], "top_company": false, "isHiring": true, "nonprofit": false, "batch": "Summer 2022", "status": "Active", "industries": [ "B2B", "Infrastructure" ], "regions": [ "France", "Europe", "Remote", "Partly Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/windmill", "api": "https://yc-oss.github.io/api/batches/summer-2022/windmill.json" }, { "id": 26811, "name": "Payload", "slug": "payload", "former_names": [ "Payload CMS" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/0f0a550c10525505849576c534b00a71c9d71c7e.png", "website": "https://payloadcms.com", "all_locations": "Grand Rapids, MI, USA", "long_description": "Payload is a developer-first headless CMS and application framework built to finally give developers a better choice in the world of CMS. From documentation to design, Payload is crafted from the ground-up to save engineers time and effort while building the backend and admin panel for websites, native apps, ecommerce, SaaS, and any other product that needs to manage content. Payload is changing the CMS status quo—working to give developers the tools they want to build the CMS they need, all in clean and well-structured code.\r\n\r\nLearn more at https://payloadcms.com.", "one_liner": "Developer-First Headless CMS and Application Framework", "team_size": 3, "industry": "B2B", "subindustry": "B2B -> Engineering, Product and Design", "launched_at": 1652737017, "tags": [ "Developer Tools", "Open Source", "API" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Summer 2022", "status": "Acquired", "industries": [ "B2B", "Engineering, Product and Design" ], "regions": [ "United States of America", "America / Canada", "Remote", "Partly Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/payload", "api": "https://yc-oss.github.io/api/batches/summer-2022/payload.json" }, { "id": 26837, "name": "Unify", "slug": "unify", "former_names": [ "Deep Ivy Inc.", "Ivy", "Unify", "Ivy" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/fb15970521caafcd30f313c8eaa1359733d2d2dd.png", "website": "https://unify.ai", "all_locations": "London, England, United Kingdom; Remote", "long_description": "No prompting, no setup, no jargon. Just hop on a call, onboard like anyone else, and let them take the tedious tasks off your plate.", "one_liner": "AI teammates for everyone else 🤖", "team_size": 6, "industry": "B2B", "subindustry": "B2B -> Productivity", "launched_at": 1657390616, "tags": [ "Artificial Intelligence", "Productivity", "Open Source", "AI", "AI Assistant" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Winter 2023", "status": "Active", "industries": [ "B2B", "Productivity" ], "regions": [ "United Kingdom", "Europe", "Remote", "Fully Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/unify", "api": "https://yc-oss.github.io/api/batches/winter-2023/unify.json" }, { "id": 26851, "name": "Mistle", "slug": "mistle", "former_names": [ "Ajourney", "Zapi" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/d57b2b10c7e35a1990c9ac0bf09d58abdb4ff9d5.png", "website": "https://mistle.dev", "all_locations": "Singapore, Singapore; Remote", "long_description": "Mistle is the open source alternative to Stripe Minions, Ramp Inspect and Shopify River. Instead of spending months building an internal platform, teams use Mistle to run collaborative background agents from day one.", "one_liner": "Open source background agents", "team_size": 2, "industry": "B2B", "subindustry": "B2B -> Engineering, Product and Design", "launched_at": 1654527668, "tags": [ "B2B", "Open Source", "AI" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Summer 2022", "status": "Active", "industries": [ "B2B", "Engineering, Product and Design" ], "regions": [ "Singapore", "Southeast Asia", "Remote", "Fully Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/mistle", "api": "https://yc-oss.github.io/api/batches/summer-2022/mistle.json" }, { "id": 26885, "name": "AnythingLLM", "slug": "anythingllm", "former_names": [ "Rampp Labs Inc", "Rampp.xyz", "MintPlex", "Mintplex", "Mintplex Labs" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/09de3d530cdabdf26d6739b7f443a35022608a76.png", "website": "https://anythingllm.com", "all_locations": "Los Angeles, CA, USA; Remote", "long_description": "AnythingLLM is an all-in-one desktop, mobile, and open-source on-device AI application that makes local AI practically useful for the everyday person.\r\n\r\nAnythingLLM (56K stars) (https://github.com/Mintplex-Labs/anything-llm)", "one_liner": "Building the definitive all-in-one on-device AI productivity tool", "team_size": 4, "industry": "Consumer", "subindustry": "Consumer", "launched_at": 1652840561, "tags": [ "Artificial Intelligence", "Open Source", "AI Assistant" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Summer 2022", "status": "Active", "industries": [ "Consumer" ], "regions": [ "United States of America", "America / Canada", "Remote", "Fully Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/anythingllm", "api": "https://yc-oss.github.io/api/batches/summer-2022/anythingllm.json" }, { "id": 27040, "name": "Grai", "slug": "grai", "former_names": [], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/217dbf57c9649c7822bbee101a62b2d34a750a85.png", "website": "https://www.grai.io", "all_locations": "San Francisco, CA, USA; London, England, United Kingdom; St. Louis, MO, USA", "long_description": "Grai is open source version control for metadata. We can determine how database changes will affect deployed machine learning models, apis, and dashboards because we understand how data relates across systems which don’t otherwise talk to each other.", "one_liner": "Open source version control for metadata", "team_size": 3, "industry": "B2B", "subindustry": "B2B -> Infrastructure", "launched_at": 1660014966, "tags": [ "Developer Tools", "SaaS", "Analytics", "Open Source", "Data Engineering" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Summer 2022", "status": "Inactive", "industries": [ "B2B", "Infrastructure" ], "regions": [ "United States of America", "United Kingdom", "America / Canada", "Europe", "Remote", "Partly Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/grai", "api": "https://yc-oss.github.io/api/batches/summer-2022/grai.json" }, { "id": 27092, "name": "Lamin", "slug": "lamin", "former_names": [ "Lamin Labs" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/65bf3f581eea5d1a5b7640c508e3fc0e7c8930f9.png", "website": "https://lamin.ai", "all_locations": "", "long_description": "Query, trace, and validate datasets and models at scale. Automate context for agents and humans.\r\n\r\nOne API: lakehouse, lineage, feature store, ontologies, bio-registries & formats.", "one_liner": "Open data lakehouse for biology", "team_size": 10, "industry": "Healthcare", "subindustry": "Healthcare -> Healthcare IT", "launched_at": 1655969538, "tags": [ "Developer Tools", "Machine Learning", "Biotech", "Open Source", "Data Engineering" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Summer 2022", "status": "Active", "industries": [ "Healthcare", "Healthcare IT" ], "regions": [ "Remote", "Partly Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/lamin", "api": "https://yc-oss.github.io/api/batches/summer-2022/lamin.json" }, { "id": 27152, "name": "Firecrawl", "slug": "firecrawl", "former_names": [ "SideGuide", "Mendable", "SideGuide", "Mendable" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/fe35a47d1e4dd7a3c1a7dcbea86c08b5ef2d67e6.png", "website": "https://www.firecrawl.dev", "all_locations": "San Francisco, CA, USA", "long_description": "Firecrawl is the web context API for AI agents. Search, scrape, parse, and interact with the live web to turn any source into clean Markdown or structured data your agents can ship with. Open source, ZDR-ready, and trusted by 80,000+ teams including Apple, Shopify, Canva, Zapier, and Lovable to power production AI.", "one_liner": "The API to search, scrape, and interact with the web at scale. 🔥", "team_size": 25, "industry": "B2B", "subindustry": "B2B", "launched_at": 1661283698, "tags": [ "Developer Tools", "Open Source", "AI" ], "tags_highlighted": [], "top_company": false, "isHiring": true, "nonprofit": false, "batch": "Summer 2022", "status": "Active", "industries": [ "B2B" ], "regions": [ "United States of America", "America / Canada", "Remote", "Partly Remote" ], "stage": "Growth", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/firecrawl", "api": "https://yc-oss.github.io/api/batches/summer-2022/firecrawl.json" }, { "id": 27251, "name": "Lotus", "slug": "lotus", "former_names": [], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/2939eceea0905b3a2c3c34f9f16476bbc6c94309.png", "website": "http://uselotus.io", "all_locations": "New York, NY, USA; Remote", "long_description": "Lotus is an open-core pricing and billing engine. We enable API companies to automate their custom usage-based pricing for any metric. Rather than guess on how to charge their customers, Lotus provides companies with powerful new tools from metering to invoicing to testing new pricing.\r\n\r\nOur self-hosted software is free on GitHub, and we offer a paid cloud version and enterprise tier for support.", "one_liner": "Open-Core Pricing and Billing Engine", "team_size": 2, "industry": "B2B", "subindustry": "B2B -> Finance and Accounting", "launched_at": 1659989754, "tags": [ "Fintech", "SaaS", "Open Source", "Enterprise" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Summer 2022", "status": "Inactive", "industries": [ "B2B", "Finance and Accounting" ], "regions": [ "United States of America", "America / Canada", "Remote", "Fully Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/lotus", "api": "https://yc-oss.github.io/api/batches/summer-2022/lotus.json" }, { "id": 27664, "name": "Infisical", "slug": "infisical", "former_names": [], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/e613a0916d0e99cf2fa52a3c8be726a00bd6c51a.png", "website": "https://infisical.com", "all_locations": "San Francisco, CA, USA", "long_description": "Infisical is the all-in-one security infrastructure platform for secrets, certificates, and privileged access management.\r\n\r\nInfisical stores your secrets and injects them back into your development workflow, CI/CD pipelines, and cloud infrastructure. It comes with secrets versioning, point-in-time recovery, audit logging, automatic secret rotation capabilities, and more.", "one_liner": "Unified platform for secrets, certs, and privileged access management", "team_size": 50, "industry": "B2B", "subindustry": "B2B -> Security", "launched_at": 1674066953, "tags": [ "Developer Tools", "SaaS", "B2B", "Security", "Open Source" ], "tags_highlighted": [], "top_company": false, "isHiring": true, "nonprofit": false, "batch": "Winter 2023", "status": "Active", "industries": [ "B2B", "Security" ], "regions": [ "United States of America", "America / Canada", "Remote", "Partly Remote" ], "stage": "Growth", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/infisical", "api": "https://yc-oss.github.io/api/batches/winter-2023/infisical.json" }, { "id": 27673, "name": "Reflex", "slug": "reflex", "former_names": [ "Pynecone" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/677513c7f80f22199de3136c5024581799a126f2.png", "website": "https://reflex.dev", "all_locations": "San Francisco, CA, USA", "long_description": "Reflex is the operating system for building mission-critical enterprise applications.\r\n\r\nToday’s enterprise stack is fragmented. Shipping an app requires stitching together multiple tools and coordinating across multiple roles. Reflex replaces that complexity with a single, unified platform to build, deploy, and manage production applications end-to-end.\r\n\r\nWe empower teams to own the entire lifecycle of their apps — from idea to production — without needing specialized infrastructure, DevOps, or platform teams. We do this by providing solid, reusable abstractions at both the framework and infrastructure layers. Because we own the underlying open-source framework and the platform it runs on, we can manage the full lifecycle of the application seamlessly.\r\n\r\nWith Reflex, teams securely connect to company data, use AI to build standardized applications on top of our open-source framework, and deploy with a single click to share across their organization.\r\n\r\nWe’re replacing the fragmented enterprise stack — and the organizational bottlenecks that come with it.\r\n\r\nFounded by Alek Petuskey and Nikhil Rao, Reflex has powered over 1 million applications, earned 28,000+ GitHub stars, and is used by 30% of Fortune 500 companies for internal tools and data-driven applications.", "one_liner": "The operating system for building mission-critical enterprise apps.", "team_size": 10, "industry": "B2B", "subindustry": "B2B -> Infrastructure", "launched_at": 1674447011, "tags": [ "Artificial Intelligence", "Developer Tools", "Open Source", "Web Development", "Infrastructure" ], "tags_highlighted": [], "top_company": false, "isHiring": true, "nonprofit": false, "batch": "Winter 2023", "status": "Active", "industries": [ "B2B", "Infrastructure" ], "regions": [ "United States of America", "America / Canada" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/reflex", "api": "https://yc-oss.github.io/api/batches/winter-2023/reflex.json" }, { "id": 27677, "name": "Matano", "slug": "matano", "former_names": [], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/a222c90e6dc5a485e0f58e7075243197316b5126.png", "website": "https://www.matano.dev", "all_locations": "Seattle, WA, USA; San Francisco, CA, USA", "long_description": "Matano is a modern SIEM, built for cloud-first security teams. \r\n\r\nIt replaces traditional SIEM databases like Splunk or Elastic with a cybersecurity platform built on top of a cost-effective Security Data Lake.", "one_liner": "Cloud Native SIEM (alternative to Splunk/Elastic)", "team_size": 2, "industry": "B2B", "subindustry": "B2B -> Security", "launched_at": 1673220532, "tags": [ "DevSecOps", "Analytics", "Open Source", "Cybersecurity" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Winter 2023", "status": "Active", "industries": [ "B2B", "Security" ], "regions": [ "United States of America", "America / Canada", "Remote", "Partly Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/matano", "api": "https://yc-oss.github.io/api/batches/winter-2023/matano.json" }, { "id": 27678, "name": "Traceloop", "slug": "traceloop", "former_names": [ "Rovie", "Vecinity", "Enrolla", "Traceloop", "traceloop" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/284ee8dcb70cf1539c35db6e20ec3370746244d6.png", "website": "https://www.traceloop.com", "all_locations": "Tel Aviv-Yafo, Tel Aviv District, Israel", "long_description": "Traceloop gives you full visibility into every prompt, response, and failure. Track quality, detect drift, and stop hallucinations before they reach your users. Powered by OpenTelemetry, integrated in one line.", "one_liner": "Know what your LLM is doing — and why it’s failing", "team_size": 9, "industry": "B2B", "subindustry": "B2B", "launched_at": 1675081598, "tags": [ "Developer Tools", "Generative AI", "SaaS", "Open Source" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Winter 2023", "status": "Acquired", "industries": [ "B2B" ], "regions": [ "Israel", "Middle East and North Africa", "Remote", "Partly Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/traceloop", "api": "https://yc-oss.github.io/api/batches/winter-2023/traceloop.json" }, { "id": 27680, "name": "Trigger.dev", "slug": "trigger-dev", "former_names": [ "API Hero" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/737382941e8e44eb83d28fa6b26854131dcdfcf9.png", "website": "https://trigger.dev", "all_locations": "London, England, United Kingdom", "long_description": "Trigger.dev is the open source platform for building AI agents and workflows in TypeScript. Long-running tasks with retries, queues, full observability, and elastic scaling.\r\n\r\nPreviously, the founders built JSON Hero, an open source JSON viewer that is currently used by more than 35k developers a month. Eric was CTO of Code School, an early code learning platform that was acquired in 2015. Matt created two iPad apps that won Apple’s App of the Year.", "one_liner": "Build and deploy fully‑managed AI agents and workflows", "team_size": 9, "industry": "B2B", "subindustry": "B2B -> Engineering, Product and Design", "launched_at": 1665673307, "tags": [ "Developer Tools", "SaaS", "B2B", "Open Source", "AI" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Winter 2023", "status": "Active", "industries": [ "B2B", "Engineering, Product and Design" ], "regions": [ "United Kingdom", "Europe", "Remote", "Partly Remote" ], "stage": "Growth", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/trigger-dev", "api": "https://yc-oss.github.io/api/batches/winter-2023/trigger-dev.json" }, { "id": 27728, "name": "Nango", "slug": "nango", "former_names": [], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/a2c91c467d6826fc9888627093516dbe795e1a6f.png", "website": "https://nango.dev", "all_locations": "San Francisco, CA, USA; Remote", "long_description": "Customers expect your SaaS to integrate with all the software they use.\r\n\r\nWith Nango, you ship integrations your customers love, fast.\r\n\r\nLeverage hundreds of pre-built integrations and unlimited customization.", "one_liner": "A single API for all your integrations", "team_size": 6, "industry": "B2B", "subindustry": "B2B -> Engineering, Product and Design", "launched_at": 1669371609, "tags": [ "Developer Tools", "SaaS", "Open Source", "API" ], "tags_highlighted": [], "top_company": false, "isHiring": true, "nonprofit": false, "batch": "Winter 2023", "status": "Active", "industries": [ "B2B", "Engineering, Product and Design" ], "regions": [ "United States of America", "America / Canada", "Remote", "Fully Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/nango", "api": "https://yc-oss.github.io/api/batches/winter-2023/nango.json" }, { "id": 27870, "name": "Langfuse", "slug": "langfuse", "former_names": [ "Finto", "langfuse" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/d3e0acd0e4d5b3b53104245ec4f7548555f11896.png", "website": "https://langfuse.com", "all_locations": "Berlin, Berlin, Germany", "long_description": "Traces, evals, prompt management and metrics to debug and improve your LLM application.\r\nOnboard via https://langfuse.com\r\n\r\nLangfuse helps you build and improve LLM applications across the entire lifecycle: \r\n- Develop: Observability, Langfuse UI & Prompt Management\r\n- Monitor: Traces, Analytics, Metrics & Evaluations\r\n- Test: Experiments, Releases & Datasets\r\n\r\nWe are hiring: https://langfuse.com/careers\r\n\r\nLangfuse was acquired by Clickhouse in January of 2026.", "one_liner": "Open source LLM engineering platform", "team_size": 19, "industry": "B2B", "subindustry": "B2B -> Engineering, Product and Design", "launched_at": 1673911015, "tags": [ "Developer Tools", "Generative AI", "Analytics", "Open Source", "AI" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Winter 2023", "status": "Acquired", "industries": [ "B2B", "Engineering, Product and Design" ], "regions": [ "Germany", "Europe", "Remote", "Partly Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/langfuse", "api": "https://yc-oss.github.io/api/batches/winter-2023/langfuse.json" }, { "id": 27902, "name": "KV Cash", "slug": "kv-cash", "former_names": [ "Teclada", "Logital (Teclada)", "Logital AI (Teclada)" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/5b5e56a9b5e26e2dce5d150c6db8702733501105.png", "website": "https://kv.cash", "all_locations": "San Francisco, CA, USA", "long_description": "Contracts shouldn't just execute. They should reason.\r\n\r\nBitcoin introduced decentralized money.\r\nEthereum introduced programmable contracts.\r\nKV Cash introduces intelligent contracts.\r\n\r\nDeterministic AI + TypeScript makes it simple, explainable, and composable. Once seen, it's obvious.\r\n\r\nKV Cash is what contracts were always trying to become.", "one_liner": "KV Cash, a blockchain where contracts can finally think", "team_size": null, "industry": "B2B", "subindustry": "B2B -> Infrastructure", "launched_at": 1678082739, "tags": [ "Crypto / Web3", "Open Source", "AI", "Cryptocurrency" ], "tags_highlighted": [ "Crypto / Web3" ], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Winter 2023", "status": "Active", "industries": [ "B2B", "Infrastructure" ], "regions": [ "United States of America", "America / Canada" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/kv-cash", "api": "https://yc-oss.github.io/api/batches/winter-2023/kv-cash.json" }, { "id": 27919, "name": "Helicone", "slug": "helicone", "former_names": [ "Prompt Zero", "TableTalk", "Valyr" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/0fd0f837e64cef0930fd804e4345c0342b9a2827.png", "website": "https://www.helicone.ai/", "all_locations": "San Francisco, CA, USA", "long_description": "Helicone.ai is creating an advanced observability platform tailored for developers working with Large Language Models (LLMs). Our goal is to simplify and enhance the operational side of deploying these models, making it easier for developers to monitor, manage, and optimize their AI applications at scale. Helicone provides a unified view of performance, cost, and user interaction metrics for various LLM providers, like OpenAI, Anthropic, and LangChain, empowering developers to make their LLM deployments more efficient, reliable, and cost-effective.\r\n\r\n### Key Features\r\n\r\n1. **Centralized Observability**: Our platform captures and visualizes detailed logs and metrics across all LLM deployments. With tools for prompt management, performance tracing, and debugging, Helicone provides real-time insights into the inner workings of your LLMs.\r\n\r\n2. **LLM Performance Optimization**: Helicone supports prompt experimentation, success rate tracking, and fine-tuning, allowing you to continuously improve response quality and efficiency. This level of insight makes it easier to deliver high-performing, cost-effective AI applications.\r\n\r\n3. **Flexible Data Management**: We understand that data privacy is critical. Helicone supports deployment options for dedicated instances, hybrid cloud integrations, or self-hosted environments, allowing clients to maintain control over their data and ensuring compliance with privacy standards.\r\n\r\n### Built for Developers and Data Scientists\r\n\r\nHelicone is designed to meet the needs of engineers and data scientists who require transparency and control over their LLMs. From chatbots to document processing systems, Helicone equips you with the insights needed to track costs, understand user interactions, and optimize outputs—all from one intuitive platform.\r\n\r\nBy combining observability with LLM-specific insights, Helicone is redefining AI monitoring, empowering developers to deploy and scale their AI models with confidence.", "one_liner": "LLM Observability for Developers", "team_size": 5, "industry": "B2B", "subindustry": "B2B -> Analytics", "launched_at": 1675832219, "tags": [ "AIOps", "Developer Tools", "Analytics", "Open Source" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Winter 2023", "status": "Acquired", "industries": [ "B2B", "Analytics" ], "regions": [ "United States of America", "America / Canada" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/helicone", "api": "https://yc-oss.github.io/api/batches/winter-2023/helicone.json" }, { "id": 27971, "name": "Arroyo", "slug": "arroyo", "former_names": [], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/1a7f1c3e5b076e80781490318e3dfe43f0db3a2b.png", "website": "https://www.arroyo.dev", "all_locations": "Berkeley, CA, USA", "long_description": "Arroyo is a serverless stream processing platform built on top of the open-source Arroyo streaming engine. We allow companies to transform, filter, aggregate, and join their Kafka streams in real-time just by writing SQL. We charge purely based on usage, with no fixed costs or clusters to manage.\r\n\r\nIn 2025, Arroyo was acquired by Cloudflare and now powers Cloudflare Pipelines", "one_liner": "Cloud-native stream processing", "team_size": 2, "industry": "B2B", "subindustry": "B2B -> Infrastructure", "launched_at": 1674589009, "tags": [ "Developer Tools", "SaaS", "Open Source", "Cloud Computing" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Winter 2023", "status": "Acquired", "industries": [ "B2B", "Infrastructure" ], "regions": [ "United States of America", "America / Canada" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/arroyo", "api": "https://yc-oss.github.io/api/batches/winter-2023/arroyo.json" }, { "id": 28074, "name": "Keep", "slug": "keep", "former_names": [ "Paladin" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/ca57c15ee63fa6b716d10d0f8f29a5e1732f44e4.png", "website": "https://www.keephq.dev", "all_locations": "Tel Aviv-Yafo, Tel Aviv District, Israel; Remote", "long_description": "Keep is an open-source AIOps platform. Keep acts as a single pane of glass to all your alerts from any monitoring tool and helps you turn 1000s into just 10s of meaningful alerts.\r\n\r\nKeep joined forces with Elastic on May 2025.", "one_liner": "The open-source AIOps platform", "team_size": 5, "industry": "B2B", "subindustry": "B2B -> Engineering, Product and Design", "launched_at": 1674164403, "tags": [ "SaaS", "B2B", "Open Source", "Monitoring" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Winter 2023", "status": "Acquired", "industries": [ "B2B", "Engineering, Product and Design" ], "regions": [ "Israel", "Middle East and North Africa", "Remote", "Fully Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/keep", "api": "https://yc-oss.github.io/api/batches/winter-2023/keep.json" }, { "id": 28081, "name": "DAGWorks Inc.", "slug": "dagworks-inc", "former_names": [], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/94a18b5c0cc3a340150d731fa97acee3a6a56ebd.png", "website": "https://www.dagworks.io/", "all_locations": "San Francisco, CA, USA; Remote", "long_description": "We’re on a mission to enable everyone to build reliable AI agents & AI applications. We're fully open source, and provide a unique integrated development & observability experience for those building anything in the AI space. This is the first step towards laying the foundations for Composable AI Systems; all AI systems need observability and introspection to be first class for them to be reliable.\r\n\r\nHow? We're standardizing how people write python to express data, ML, LLM, & agent workflows/pipelines/applications with lightweight frameworks. So that no matter the author, it'll be easy to collaborate, connect, and importantly in one line integrate observability and datastore needs. This speeds up time to production and reduces TCO because code remains easy to maintain and your data flywheel stays manageable. So you can increase the top line & bottom line of your business by delivering on AI that is reliable.\r\n\r\nWe've got two open source projects:\r\n- one focused on AI applications, called Burr (https://github.com/dagworks-inc/burr).\r\n- one focused on AI pipelines/workflows, called Hamilton (https://github.com/dagworks-inc/hamilton) see https://www.tryhamilton.dev\r\n\r\nBoth Hamilton & Burr come with self-hostable UIs (+ enterprise & SaaS offerings). With a one-line code change, you get versioning, lineage / tracing, cataloging, and observability out of the box with Hamilton. With Burr you get tracing, observability and persistence in a single line addition.\r\n", "one_liner": "Open source tools & services for reliable AI Agents & AI Applications", "team_size": 2, "industry": "B2B", "subindustry": "B2B", "launched_at": 1672773099, "tags": [ "AIOps", "Artificial Intelligence", "Developer Tools", "Generative AI", "Open Source" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Winter 2023", "status": "Acquired", "industries": [ "B2B" ], "regions": [ "United States of America", "America / Canada", "Remote", "Fully Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": true, "question_answers": false, "url": "https://www.ycombinator.com/companies/dagworks-inc", "api": "https://yc-oss.github.io/api/batches/winter-2023/dagworks-inc.json" }, { "id": 28087, "name": "Rivet", "slug": "rivet", "former_names": [], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/78acdf0f2271926c4c6856385a0b7846a8135bd7.png", "website": "https://rivet.dev", "all_locations": "San Francisco, CA, USA", "long_description": "Easily build & scale AI agents, functions, stateful services, and more. Open-source & self-hostable.", "one_liner": "Open-Source alternative to Durable Objects", "team_size": 5, "industry": "B2B", "subindustry": "B2B -> Infrastructure", "launched_at": 1675129787, "tags": [ "B2B", "Open Source", "Infrastructure" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Winter 2023", "status": "Active", "industries": [ "B2B", "Infrastructure" ], "regions": [ "United States of America", "America / Canada", "Remote", "Partly Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/rivet", "api": "https://yc-oss.github.io/api/batches/winter-2023/rivet.json" }, { "id": 28093, "name": "Common Paper", "slug": "common-paper", "former_names": [], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/1a5fd0218aaaf79164dd214261cfc4cec6d668f8.png", "website": "https://commonpaper.com/", "all_locations": "Philadelphia, PA, USA; Remote", "long_description": "Common Paper is a contracting platform that helps startups close deals with their customers faster and with less risk.\r\n\r\nWe create standard, open-source contracts for commercial transactions, including NDAs, DPAs, and sales agreements. These are analogous to the SAFE, but are between customers and vendors rather than investors and startups. The standardized format means that data within contracts is structured from inception. \r\n\r\nWe build software for managing standard contracts, accelerating sales cycles, and making the data within the contracts programmatically accessible to other business systems.\r\n\r\nTens of thousands of people have downloaded our standard contracts, and 63% of the contracts on our system close within 24 hours.", "one_liner": "The SAFE for commercial contracts", "team_size": 8, "industry": "B2B", "subindustry": "B2B -> Sales", "launched_at": 1671143047, "tags": [ "SaaS", "Open Source", "Sales", "Legal", "LegalTech" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Winter 2023", "status": "Active", "industries": [ "B2B", "Sales" ], "regions": [ "United States of America", "America / Canada", "Remote", "Fully Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/common-paper", "api": "https://yc-oss.github.io/api/batches/winter-2023/common-paper.json" }, { "id": 28096, "name": "OpenInt", "slug": "openint", "former_names": [ "Map3", "Ally", "Evefan" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/67a1ff68627d7db644256cf5b89e938213258bed.png", "website": "https://openint.dev", "all_locations": "Remote", "long_description": "OpenInt helps teams ship product integrations in hours, not weeks, using no or low code. Read and write data using unified APIs or sync it straight to your database. ", "one_liner": "Open Source Embedded Product Integrations", "team_size": 4, "industry": "B2B", "subindustry": "B2B -> Analytics", "launched_at": 1673267479, "tags": [ "Developer Tools", "SaaS", "Open Source", "AI" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Winter 2023", "status": "Acquired", "industries": [ "B2B", "Analytics" ], "regions": [ "Remote", "Fully Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/openint", "api": "https://yc-oss.github.io/api/batches/winter-2023/openint.json" }, { "id": 28103, "name": "Fern", "slug": "fern", "former_names": [ "Fern", "fern" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/4f48c426b67826bae7fd3fded6bfc3e891fd72d2.png", "website": "https://www.buildwithfern.com", "all_locations": "New York, NY, USA", "long_description": "APIs underpin the internet but are still painful to work with. They are often untyped, unstandardized, and out-of-sync across multiple sources of truth.\r\n\r\nFern helps companies deliver SDKs and API documentation that they’re are proud to share with their customers. Since launching in 2023, we’ve been trusted by over 200 customers, including industry leaders like Square, Webflow, ElevenLabs, Auth0, and Intercom, to power their developer and agent experiences.\r\n\r\nWe’re fewer than 40 people, based in Brooklyn, NY, and are building open source.", "one_liner": "Instantly offer SDKs and API Docs", "team_size": 30, "industry": "B2B", "subindustry": "B2B -> Engineering, Product and Design", "launched_at": 1674979441, "tags": [ "Developer Tools", "SaaS", "B2B", "Open Source", "API" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Winter 2023", "status": "Acquired", "industries": [ "B2B", "Engineering, Product and Design" ], "regions": [ "United States of America", "America / Canada" ], "stage": "Growth", "app_video_public": true, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/fern", "api": "https://yc-oss.github.io/api/batches/winter-2023/fern.json" }, { "id": 28118, "name": "Vocode", "slug": "vocode", "former_names": [ "Brush" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/aad057fc105425dc8b99aca0064ab8e6964e0c28.png", "website": "https://vocode.dev", "all_locations": "San Francisco, CA, USA", "long_description": "Open source voice AI.\r\n\r\nCheck out our docs for more information: https://docs.vocode.dev", "one_liner": "Open source Voice AI", "team_size": 3, "industry": "B2B", "subindustry": "B2B", "launched_at": 1677630945, "tags": [ "Developer Tools", "Generative AI", "Open Source", "Conversational AI" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Winter 2023", "status": "Active", "industries": [ "B2B" ], "regions": [ "United States of America", "America / Canada", "Remote", "Partly Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/vocode", "api": "https://yc-oss.github.io/api/batches/winter-2023/vocode.json" }, { "id": 28141, "name": "highlight.io", "slug": "highlight-io", "former_names": [ "Highlight" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/0d4301601e4f70936655aa2574a0bf0a798fe1bd.png", "website": "https://www.highlight.io/", "all_locations": "Seattle, WA, USA; Remote", "long_description": "highlight.io is the open source, full-stack monitoring platform. With just a few lines of code, Highlight makes it easy to understand what's slowing down your users and swiftly address errors and regressions on your web app. Imagine that you have a customer reporting an issue on your web app. With highlight.io, you can playback their exact interactions to reproduce the bug and get notified of any future errors that could happen.\r\n\r\nThat being said, we’re just getting started! We have plans to go way deeper into your observability stack to give you all of the visibility you need. Join us on this journey:\r\n- Star us on GitHub (https://github.com/highlight/highlight) to keep up with releases and news.\r\n- Join our Discord (https://highlight.io/community) to share product feedback and thoughts.\r\n", "one_liner": "The open source, fullstack monitoring platform: stop guessing why…", "team_size": 8, "industry": "B2B", "subindustry": "B2B -> Engineering, Product and Design", "launched_at": 1675367373, "tags": [ "Developer Tools", "SaaS", "B2B", "Open Source", "Monitoring" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Winter 2023", "status": "Acquired", "industries": [ "B2B", "Engineering, Product and Design" ], "regions": [ "United States of America", "America / Canada", "Remote", "Fully Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/highlight-io", "api": "https://yc-oss.github.io/api/batches/winter-2023/highlight-io.json" }, { "id": 28409, "name": "LiteLLM", "slug": "litellm", "former_names": [ "Clerkie", "BerriAI", "LiteLLM", "BerriAI" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/34f2cd4e65f065f81d234d6cfb21f911860e50cc.png", "website": "https://www.litellm.ai/", "all_locations": "San Francisco, CA, USA", "long_description": "LiteLLM is an open-source LLM Gateway with 18K+ stars on GitHub and trusted by companies like Rocket Money, Samsara, Lemonade, and Adobe. LiteLLM provides an open source Python SDK and Python FastAPI Server that allows calling 100+ LLM APIs (Bedrock, Azure, OpenAI, VertexAI, Cohere, Anthropic) in the OpenAI format\r\n\r\nWe have raised a $1.6M seed round from Y Combinator, Gravity Fund and Pioneer Fund", "one_liner": "Call every LLM API like it's OpenAI [100+ LLMs]", "team_size": 10, "industry": "B2B", "subindustry": "B2B", "launched_at": 1675814900, "tags": [ "AIOps", "Developer Tools", "Generative AI", "Open Source", "AI" ], "tags_highlighted": [], "top_company": false, "isHiring": true, "nonprofit": false, "batch": "Winter 2023", "status": "Active", "industries": [ "B2B" ], "regions": [ "United States of America", "America / Canada" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/litellm", "api": "https://yc-oss.github.io/api/batches/winter-2023/litellm.json" }, { "id": 28415, "name": "moonrepo", "slug": "moonrepo", "former_names": [], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/3de25b12e8aab670255b22d53c12d30ccd142ae5.png", "website": "https://moonrepo.dev", "all_locations": "Portland, OR, USA; Remote", "long_description": "moonrepo is a developer tool that reduces build/test/deploy times, and maintenance costs for companies. We’ve achieved this through moon, our open source build system and repository management tool. moon can be paired with moonbase, our paid service that provides cloud caching, CI insights, code ownership, and health score related metrics. The company is founded by Miles Johnson and James Pozdena who have a combined 25+ years in the software development industry with tenure at Airbnb and Coinbase.", "one_liner": "Open source build tool for monorepos and large codebases", "team_size": 2, "industry": "B2B", "subindustry": "B2B -> Productivity", "launched_at": 1675878806, "tags": [ "Developer Tools", "SaaS", "Productivity", "Open Source", "Enterprise" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Winter 2023", "status": "Inactive", "industries": [ "B2B", "Productivity" ], "regions": [ "United States of America", "America / Canada", "Remote", "Fully Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": true, "question_answers": false, "url": "https://www.ycombinator.com/companies/moonrepo", "api": "https://yc-oss.github.io/api/batches/winter-2023/moonrepo.json" }, { "id": 28659, "name": "PeerDB", "slug": "peerdb", "former_names": [ "PeerDB Inc" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/4a83477f0ae90481f26400baea36bd4c2fed890a.png", "website": "https://peerdb.io/", "all_locations": "", "long_description": "At PeerDB, we are building a fast, simple and the most cost effective way to stream data from Postgres to Data Warehouses, Queues and Storage engines. If you are running Postgres at the heart of your data-stack and move data at scale from Postgres to any of the above targets, PeerDB can provide value.\r\n\r\n\r\nWe support different modes of streaming - log based (CDC), cursor based (timestamp or integer) and XMIN based. Performance wise, we are 10x faster than existing tools. Features wise, we support native Postgres features such as comprehensive set of data-types incl. jsonb/arrays/postgis, efficiently streaming toast columns, schema changes and so on.", "one_liner": "Fast, native ETL for Postgres 🐘 🚀", "team_size": 2, "industry": "B2B", "subindustry": "B2B -> Analytics", "launched_at": 1686776037, "tags": [ "Developer Tools", "Open Source", "Data Engineering", "Enterprise Software", "Databases" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Summer 2023", "status": "Acquired", "industries": [ "B2B", "Analytics" ], "regions": [ "Remote", "Partly Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": true, "url": "https://www.ycombinator.com/companies/peerdb", "api": "https://yc-oss.github.io/api/batches/summer-2023/peerdb.json" }, { "id": 28744, "name": "Reworkd", "slug": "reworkd", "former_names": [ "Reworkd", "Reworkd AI" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/b0530c04819d4d4e9f06ad3bb6fed6b85f152baf.png", "website": "https://reworkd.ai", "all_locations": "San Francisco, CA, USA", "long_description": "At Reworkd, we're working on multimodal LLM agents that serve as the simplest way to extract web data at scale. Customers come to us with lists of 100s to 1000s of websites along with a data schema. Our agents traverse these websites, understand their structure, and generate code to extract data from them.\r\n\r\nWe've been working on LLM agents since their inception and have received over 30k stars on GitHub and 1M+ users across previous agent products. If you're interested in our pilot program, shoot us an email!", "one_liner": "The simplest way to extract web data at scale", "team_size": 1, "industry": "B2B", "subindustry": "B2B", "launched_at": 1686444973, "tags": [ "Artificial Intelligence", "Generative AI", "B2B", "Open Source" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Summer 2023", "status": "Active", "industries": [ "B2B" ], "regions": [ "United States of America", "America / Canada" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/reworkd", "api": "https://yc-oss.github.io/api/batches/summer-2023/reworkd.json" }, { "id": 28777, "name": "Twenty", "slug": "twenty", "former_names": [], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/2befcd73780fb4c29e4bd8bbf8222b0adb1020b3.png", "website": "https://twenty.com", "all_locations": "San Francisco, CA, USA", "long_description": "Building a modern alternative to Salesforce: https://github.com/twentyhq/twenty", "one_liner": "Open Source CRM", "team_size": 11, "industry": "B2B", "subindustry": "B2B", "launched_at": 1690850787, "tags": [ "SaaS", "B2B", "Open Source", "Sales", "CRM" ], "tags_highlighted": [], "top_company": false, "isHiring": true, "nonprofit": false, "batch": "Summer 2023", "status": "Active", "industries": [ "B2B" ], "regions": [ "United States of America", "America / Canada", "Remote", "Partly Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/twenty", "api": "https://yc-oss.github.io/api/batches/summer-2023/twenty.json" }, { "id": 28887, "name": "Skyvern", "slug": "skyvern", "former_names": [ "Wyvern AI (Previously Ikonomos)", "Wyvern AI" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/87d977bf0d4b7032c71830901e118beb0ca9946c.png", "website": "https://www.skyvern.com/", "all_locations": "San Francisco, CA, USA; Remote", "long_description": "Skyvern helps companies automate browser based workflows using LLMs and Computer Vision, fully automating manual workflows and replacing brittle or unreliable scripts.\r\n\r\nExamples include:\r\n1. Automating materials procurement from commerce websites\r\n2. Completing complex multi-step workflows (ie getting an insurance quote from Geico.com)\r\n3. Automatically logging into portals and downloading invoices\r\n4. Navigating legacy content systems to do data extraction or data entry", "one_liner": "Open Source AI Agent to automate browser workflows via an API", "team_size": 10, "industry": "B2B", "subindustry": "B2B -> Infrastructure", "launched_at": 1687648021, "tags": [ "Artificial Intelligence", "Robotic Process Automation", "Workflow Automation", "Open Source", "API" ], "tags_highlighted": [], "top_company": false, "isHiring": true, "nonprofit": false, "batch": "Summer 2023", "status": "Active", "industries": [ "B2B", "Infrastructure" ], "regions": [ "United States of America", "America / Canada", "Remote", "Fully Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/skyvern", "api": "https://yc-oss.github.io/api/batches/summer-2023/skyvern.json" }, { "id": 28907, "name": "refine", "slug": "refine", "former_names": [ "refine", "Refine" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/aeaa683b72502977824eb71f47dba97607b154c0.png", "website": "https://refine.dev", "all_locations": "San Francisco, CA, USA; Remote", "long_description": "refine is an open-source, headless React framework for rapidly building enterprise web applications. It eliminates many repetitive tasks like\r\n\r\n➡️ CRUD operations\r\n➡️ State management\r\n➡️ Routing\r\n➡️ Authentication\r\n➡️ Access Control\r\n➡️ i18n\r\n\r\nand saves days of development time.\r\n\r\nSo far, thousands of great projects have been built by 15,000+ monthly active refine developers. Use cases are ranging from admin panels, dashboards, and internal tools to B2B solutions and complex SaaS interfaces. \r\n\r\nrefine is backed by a strong community featuring 16K GitHub stars ⭐️, 180+ contributors and 2,500 Discord members. \r\n\r\nThanks to it's unique \"Headless UI\" approach, refine works with any custom design. It has also ready-made integrations with 4 most popular UI frameworks: Ant Design, Material UI, Chakra UI and Mantine. refine is totally backend agnostic and it can connect to 15+ backend services out-of-the-box, incl. custom REST & GraphQL API's.\r\n\r\nWith refine, developers always have 100% control over their projects as they build, style and deploy the way they like.\r\n", "one_liner": "Open-source Retool for enterprise", "team_size": 10, "industry": "B2B", "subindustry": "B2B -> Engineering, Product and Design", "launched_at": 1687469921, "tags": [ "Developer Tools", "Open Source", "Web Development" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Summer 2023", "status": "Active", "industries": [ "B2B", "Engineering, Product and Design" ], "regions": [ "United States of America", "America / Canada", "Remote", "Fully Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/refine", "api": "https://yc-oss.github.io/api/batches/summer-2023/refine.json" }, { "id": 28978, "name": "Khoj", "slug": "khoj", "former_names": [], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/34c0b5b2907cbf1aeb1fbc4283f0011a8b58c86b.png", "website": "https://khoj.dev/", "all_locations": "San Francisco, CA, USA; Remote", "long_description": "Khoj is an applied artificial intelligence company. We're a tiny team of hackers doing applied research and building safe, useful ai software for humans.", "one_liner": "AI for humans", "team_size": 2, "industry": "Consumer", "subindustry": "Consumer", "launched_at": 1689811773, "tags": [ "Generative AI", "Consumer", "Productivity", "Open Source", "AI Assistant" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Summer 2023", "status": "Active", "industries": [ "Consumer" ], "regions": [ "United States of America", "America / Canada", "Remote", "Fully Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/khoj", "api": "https://yc-oss.github.io/api/batches/summer-2023/khoj.json" }, { "id": 29078, "name": "RecipeUI", "slug": "recipeui", "former_names": [ "Convi", "Toph", "RecpeUI", "RecipeUI", "RecipeUI`", "RecipeUI", "RecipeUI`" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/7580790de28f6334e2dd731c6927dfdedd2ba02a.png", "website": "https://recipeui.com", "all_locations": "San Francisco, CA, USA", "long_description": "The first version of RecipeUI was a viral project at Robinhood that reached 100% adoption from all engineering and QA teams. When an API broke, anyone from Frontend to QA to PMs could debug without relying on backend engineers", "one_liner": "The open source Postman alternative.", "team_size": 2, "industry": "B2B", "subindustry": "B2B -> Engineering, Product and Design", "launched_at": 1691613832, "tags": [ "Developer Tools", "Open Source", "API" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Summer 2023", "status": "Active", "industries": [ "B2B", "Engineering, Product and Design" ], "regions": [ "United States of America", "America / Canada" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/recipeui", "api": "https://yc-oss.github.io/api/batches/summer-2023/recipeui.json" }, { "id": 29079, "name": "Tiptap", "slug": "tiptap", "former_names": [], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/5ea1ff4314cdf63ee3867e1d262f8d1119847e40.png", "website": "https://tiptap.dev/", "all_locations": "Berlin, Berlin, Germany", "long_description": "Tiptap is a suite of open source content editing and real-time collaboration tools for developers building apps like Notion or Google Docs. It’s used by thousands of businesses worldwide, including LinkedIn, GitLab, Axios, and Anthropic.", "one_liner": "The open-source document editor for humans and AI agents.", "team_size": 19, "industry": "B2B", "subindustry": "B2B -> Engineering, Product and Design", "launched_at": 1687103873, "tags": [ "Artificial Intelligence", "Developer Tools", "Open Source" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Summer 2023", "status": "Active", "industries": [ "B2B", "Engineering, Product and Design" ], "regions": [ "Germany", "Europe", "Remote", "Partly Remote" ], "stage": "Growth", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/tiptap", "api": "https://yc-oss.github.io/api/batches/summer-2023/tiptap.json" }, { "id": 29087, "name": "ParadeDB", "slug": "paradedb", "former_names": [ "Retake" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/6668d68dbb65664dcc7f40eff60e4ee586f09132.png", "website": "https://paradedb.com", "all_locations": "San Francisco, CA, USA", "long_description": "You want better search, not the burden of Elasticsearch. ParadeDB is the modern Elastic alternative built as a Postgres extension.", "one_liner": "Simple, Elastic-quality search for Postgres", "team_size": 10, "industry": "B2B", "subindustry": "B2B", "launched_at": 1689280457, "tags": [ "Developer Tools", "Analytics", "Open Source", "Infrastructure", "Databases" ], "tags_highlighted": [], "top_company": false, "isHiring": true, "nonprofit": false, "batch": "Summer 2023", "status": "Active", "industries": [ "B2B" ], "regions": [ "United States of America", "America / Canada", "Remote", "Partly Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": true, "url": "https://www.ycombinator.com/companies/paradedb", "api": "https://yc-oss.github.io/api/batches/summer-2023/paradedb.json" }, { "id": 29105, "name": "FlowiseAI", "slug": "flowiseai", "former_names": [], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/430a7c6b91b2b976c63ca3ebab6cfe4e2a6371d4.png", "website": "https://flowiseai.com", "all_locations": "Remote", "long_description": "Flowise uses low-code approach that enable developers to manage the whole lifecycle of building LLMs apps in production. From protoyping, evaluation, to iterations.", "one_liner": "Open source GenAI development platform", "team_size": 5, "industry": "B2B", "subindustry": "B2B -> Engineering, Product and Design", "launched_at": 1688552847, "tags": [ "Artificial Intelligence", "Developer Tools", "Generative AI", "Open Source" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Summer 2023", "status": "Acquired", "industries": [ "B2B", "Engineering, Product and Design" ], "regions": [ "Remote", "Fully Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": true, "url": "https://www.ycombinator.com/companies/flowiseai", "api": "https://yc-oss.github.io/api/batches/summer-2023/flowiseai.json" }, { "id": 29177, "name": "Onyx", "slug": "onyx", "former_names": [ "Danswer" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/def9ae8f0c06685a28e8184b828d9de7e1232ad3.png", "website": "https://www.onyx.app/", "all_locations": "San Francisco, CA, USA", "long_description": "Onyx is the open source chat UI connected to your company’s docs, apps, and people. We ingest and sync from all sources of information (Google Drive, Slack, GitHub, Confluence, Salesforce, etc.) to provide a centralized place for users to ask about anything. Imagine your most knowledgeable co-workers, all-rolled into one, and available 24/7!\r\n\r\nCheck us out on Github: https://www.github.com/onyx-dot-app/onyx\r\nOr visit our website: https://www.onyx.app/", "one_liner": "Open Source AI Chat", "team_size": 20, "industry": "B2B", "subindustry": "B2B -> Productivity", "launched_at": 1704724705, "tags": [ "Open Source", "NLP", "Enterprise", "Search", "AI" ], "tags_highlighted": [], "top_company": false, "isHiring": true, "nonprofit": false, "batch": "Winter 2024", "status": "Active", "industries": [ "B2B", "Productivity" ], "regions": [ "United States of America", "America / Canada" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/onyx", "api": "https://yc-oss.github.io/api/batches/winter-2024/onyx.json" }, { "id": 29178, "name": "Lantern", "slug": "lantern-2", "former_names": [], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/173b47e676be258f330e690587eca7beae572634.png", "website": "http://lantern.dev", "all_locations": "San Francisco, CA, USA", "long_description": "Lantern is the easiest way to build AI applications using Postgres.\r\n\r\nWe started Lantern because we believe AI is going to impact every single enterprise in every single industry. We want to allow every company to tap into their unstructured data to build better applications.\r\n\r\nWith Lantern Cloud, developers have access to everything they need to build an AI application: embedding generation, vector compression, vector search, efficient indexing, and more. All on top of the database they already know, Postgres, and using infrastructure that scales to billions.\r\n\r\nCheck out our code on Github: https://github.com/lanterndata/lantern", "one_liner": "Postgres vector database extension to build AI applications", "team_size": 3, "industry": "B2B", "subindustry": "B2B", "launched_at": 1690583353, "tags": [ "Artificial Intelligence", "B2B", "Open Source", "Enterprise", "Databases" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Winter 2024", "status": "Inactive", "industries": [ "B2B" ], "regions": [ "United States of America", "America / Canada", "Remote", "Partly Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/lantern-2", "api": "https://yc-oss.github.io/api/batches/winter-2024/lantern-2.json" }, { "id": 29186, "name": "Tesseral", "slug": "tesseral", "former_names": [ "Codomain Data", "Okapi", "SSO Ready", "ssoReady", "SSOReady" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/85992f888276408373d1f33710dd92fd60ae187a.png", "website": "https://tesseral.com", "all_locations": "San Francisco, CA, USA", "long_description": "Tesseral is the open source platform for managing identity and access in business software. It provides enterprise-grade capabilities, including SAML single sign-on, SCIM provisioning, role-based access control, managed API keys, and audit logs, implemented in just a few lines of code. \r\n\r\nTesseral unifies access management for employees, customers, services, and AI agents, giving organizations the flexibility to adapt to any deployment model and the authority to enforce security policies with precision.\r\n\r\nYou can learn more by reading our docs at https://tesseral.com/docs or by checking out our GitHub at https://github.com/tesseral-labs/tesseral.", "one_liner": "The open source platform for managing identity in business software", "team_size": 5, "industry": "B2B", "subindustry": "B2B", "launched_at": 1708399745, "tags": [ "Developer Tools", "SaaS", "Security", "Open Source", "API" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Winter 2024", "status": "Inactive", "industries": [ "B2B" ], "regions": [ "United States of America", "America / Canada" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/tesseral", "api": "https://yc-oss.github.io/api/batches/winter-2024/tesseral.json" }, { "id": 29187, "name": "OpenPipe", "slug": "openpipe", "former_names": [], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/78827e9e8ab6d62b5e66b11dffea9ae771b7d97a.png", "website": "https://openpipe.ai/", "all_locations": "Seattle, WA, USA", "long_description": "OpenPipe is an SDK that abstracts away fine-tuning custom models. We capture your existing provider’s prompt-completion pairs in the background and use them to create a new model that is faster, cheaper and often more accurate than the original.", "one_liner": "Turn expensive prompts into cheap fine-tuned models", "team_size": 2, "industry": "B2B", "subindustry": "B2B -> Engineering, Product and Design", "launched_at": 1690818525, "tags": [ "AIOps", "Artificial Intelligence", "Open Source" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Summer 2023", "status": "Acquired", "industries": [ "B2B", "Engineering, Product and Design" ], "regions": [ "United States of America", "America / Canada" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/openpipe", "api": "https://yc-oss.github.io/api/batches/summer-2023/openpipe.json" }, { "id": 29246, "name": "Tracecat", "slug": "tracecat", "former_names": [ "neometrics.ai", "Neometrics" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/13bc35dc5fca68051b65f9b77d4198acae677418.png", "website": "https://tracecat.com", "all_locations": "New York City, NY, USA", "long_description": "Tracecat helps AI-native security teams build agents and automate work.\r\n\r\nUsed by the most demanding security teams in mission-critical environments across defense, finance, federal and more. Open source and community driven at it's core: https://github.com/TracecatHQ/tracecat", "one_liner": "The open source AI-native security automation platform", "team_size": null, "industry": "B2B", "subindustry": "B2B -> Security", "launched_at": 1704382841, "tags": [ "Artificial Intelligence", "Security", "Open Source", "Enterprise", "Automation" ], "tags_highlighted": [], "top_company": false, "isHiring": true, "nonprofit": false, "batch": "Winter 2024", "status": "Active", "industries": [ "B2B", "Security" ], "regions": [ "United States of America", "America / Canada" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/tracecat", "api": "https://yc-oss.github.io/api/batches/winter-2024/tracecat.json" }, { "id": 29265, "name": "Pretzel AI", "slug": "pretzel-ai", "former_names": [ "Pretzel AI", "Lumen Payments" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/2c404e22972d59aa653091f4cf9a5eab3fa2894e.png", "website": "https://withpretzel.com", "all_locations": "Berlin, Berlin, Germany", "long_description": "", "one_liner": "AI tooling", "team_size": 2, "industry": "B2B", "subindustry": "B2B -> Engineering, Product and Design", "launched_at": 1710864971, "tags": [ "Artificial Intelligence", "Open Source" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Winter 2024", "status": "Active", "industries": [ "B2B", "Engineering, Product and Design" ], "regions": [ "Germany", "Europe" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/pretzel-ai", "api": "https://yc-oss.github.io/api/batches/winter-2024/pretzel-ai.json" }, { "id": 29266, "name": "nCompass Technologies", "slug": "ncompass-technologies", "former_names": [ "nCompass" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/ec22cfec2eb1602e4ae48a85862a05e4be149771.png", "website": "https://www.ncompass.tech", "all_locations": "New York, NY, USA; Remote", "long_description": "Identifying performance bottlenecks and strategizing ways to solve them takes 4-8x longer than actually writing the code to fix them. We're building an agent that is an expert at analyzing the performance GPU systems like inference engines at all levels of the stack - from CPU-GPU interactions down to GPU kernels. \r\n\r\nPairing our agent with Cursor / Claude Code allows you to automate both the reasoning and code implementation steps of performance optimization. What used to take weeks can now be done in days. \r\n\r\nAlong with our AI agent, we have features such as running diffs on system traces as well as sharing and collaboration features that make our VSCode extension the most powerful way to work on performance optimization. ", "one_liner": "Optimize performance on GPUs - 10x faster", "team_size": 3, "industry": "B2B", "subindustry": "B2B -> Engineering, Product and Design", "launched_at": 1708296726, "tags": [ "Artificial Intelligence", "Developer Tools", "Hardware", "Open Source" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Winter 2024", "status": "Active", "industries": [ "B2B", "Engineering, Product and Design" ], "regions": [ "United States of America", "America / Canada", "Remote", "Fully Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/ncompass-technologies", "api": "https://yc-oss.github.io/api/batches/winter-2024/ncompass-technologies.json" }, { "id": 29310, "name": "Tusk", "slug": "tusk", "former_names": [], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/cb011897f099f9342d33ca8a6bad3b4388ee0a54.png", "website": "https://usetusk.ai", "all_locations": "San Francisco, CA, USA", "long_description": "Tusk (YC W24) is an AI agent that helps developers generate unit and integration tests with codebase context. Tusk sits in CI and provides automatic coverage whenever software engineers raise a PR. Engineering teams use Tusk to prevent critical regressions while increasing test coverage.", "one_liner": "AI agent that generates unit and integration tests", "team_size": 4, "industry": "B2B", "subindustry": "B2B -> Engineering, Product and Design", "launched_at": 1700257117, "tags": [ "Artificial Intelligence", "Developer Tools", "Open Source" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Winter 2024", "status": "Active", "industries": [ "B2B", "Engineering, Product and Design" ], "regions": [ "United States of America", "America / Canada" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/tusk", "api": "https://yc-oss.github.io/api/batches/winter-2024/tusk.json" }, { "id": 29347, "name": "Vibrant Labs", "slug": "vibrant-labs", "former_names": [ "Exploding Gradients", "Ragas" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/b03fadf62fa443c473d34c31148c9785ea34dceb.png", "website": "https://vibrantlabs.com/", "all_locations": "San Francisco, CA, USA; Remote", "long_description": "We work on methods to autonomously scaling evals/environments for post-training agents. ", "one_liner": "Autonomously scaling environments", "team_size": 6, "industry": "B2B", "subindustry": "B2B -> Infrastructure", "launched_at": 1709606147, "tags": [ "Developer Tools", "Generative AI", "Reinforcement Learning", "Open Source", "AI" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Winter 2024", "status": "Active", "industries": [ "B2B", "Infrastructure" ], "regions": [ "United States of America", "America / Canada", "Remote", "Fully Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/vibrant-labs", "api": "https://yc-oss.github.io/api/batches/winter-2024/vibrant-labs.json" }, { "id": 29374, "name": "Superagent", "slug": "superagent", "former_names": [ "Superagent.sh" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/a5fb7dd012389ddf81869040550578bb786988ed.png", "website": "https://superagent.sh/", "all_locations": "San Francisco, CA, USA", "long_description": "Superagent helps developers make their AI apps safe.\r\n\r\nWe offer:\r\n- Red team testing — specialized attack agents probe your production AI for data leaks, harmful outputs, and unwanted actions\r\n- Structured reports with findings, evidence, and remediation guidance\r\n- A Safety Page to prove it to your customers — use it in sales, procurement reviews, and security questionnaires\r\n\r\nBuilt for companies selling AI into enterprises and regulated industries.", "one_liner": "Red teaming for AI agents", "team_size": 2, "industry": "B2B", "subindustry": "B2B -> Security", "launched_at": 1701445003, "tags": [ "Artificial Intelligence", "Security", "Open Source", "AI" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Winter 2024", "status": "Active", "industries": [ "B2B", "Security" ], "regions": [ "United States of America", "America / Canada" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/superagent", "api": "https://yc-oss.github.io/api/batches/winter-2024/superagent.json" }, { "id": 29379, "name": "Trieve", "slug": "trieve", "former_names": [ "Arguflow" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/e020de4d43f09ae8fc176bd79fd704be218893b7.png", "website": "https://trieve.ai", "all_locations": "San Francisco, CA, USA", "long_description": "Infrastructure for search teams building retrieval and RAG. Trieve combines search language models with tools for tuning ranking and relevance.\r\n\r\nBuilding excellent search is difficult and can take months to implement then even more time to maintain. Trieve offers production-ready infrastructure that works out of the box to help search teams build adjustable AI search and RAG into their products. With tools for custom models, relevancy weighting, date-recency biasing, semantic full-text hybrid search, recommendations, and more Trieve covers the full spectrum of what a team wants from their discovery infrastructure. ", "one_liner": "All-in-one API for search, RAG, & recommendations", "team_size": 7, "industry": "B2B", "subindustry": "B2B -> Infrastructure", "launched_at": 1709233497, "tags": [ "Developer Tools", "Open Source", "API", "Search", "AI" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Winter 2024", "status": "Acquired", "industries": [ "B2B", "Infrastructure" ], "regions": [ "United States of America", "America / Canada" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": true, "url": "https://www.ycombinator.com/companies/trieve", "api": "https://yc-oss.github.io/api/batches/winter-2024/trieve.json" }, { "id": 29433, "name": "Hatchet", "slug": "hatchet-run", "former_names": [ "Hatchet Technologies", "Inc." ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/5e540520fafc66c31f803395b8f5603e6765d484.png", "website": "https://hatchet.run", "all_locations": "New York, NY, USA", "long_description": "Hatchet is an orchestration platform for managing and observing AI agents, background tasks, and mission-critical workflows. Our mission is to provide developers with a simple, powerful, and reliable orchestration layer, enabling them to focus on building great applications.", "one_liner": "The orchestration platform for teams who ship.", "team_size": 7, "industry": "B2B", "subindustry": "B2B -> Infrastructure", "launched_at": 1709312849, "tags": [ "Developer Tools", "Open Source", "Infrastructure" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Winter 2024", "status": "Active", "industries": [ "B2B", "Infrastructure" ], "regions": [ "United States of America", "America / Canada" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/hatchet-run", "api": "https://yc-oss.github.io/api/batches/winter-2024/hatchet-run.json" }, { "id": 29466, "name": "OpenFoundry", "slug": "openfoundry", "former_names": [ "FlowState", "Unidata" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/7ce4129c96ae12a1f36222fb4e03f8ee4c1b0306.png", "website": "https://www.openfoundry.ai/", "all_locations": "San Francisco, CA, USA", "long_description": "OpenFoundry is an open source platform that helps engineers build, deploy, and scale their open source AI stack 10x faster. Ship your AI stack with just one line of code. You could think of us as an open source alternative to Hugging Face.\r\n\r\nLearn more and check out a demo of this in action in our Launch YC post: https://www.ycombinator.com/launches/KhY-openfoundry-developer-infrastructure-for-open-source-ai", "one_liner": "The fastest developer experience for building on open source AI.", "team_size": 2, "industry": "B2B", "subindustry": "B2B -> Engineering, Product and Design", "launched_at": 1711038198, "tags": [ "Developer Tools", "B2B", "Open Source", "Infrastructure", "AI" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Winter 2024", "status": "Active", "industries": [ "B2B", "Engineering, Product and Design" ], "regions": [ "United States of America", "America / Canada" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/openfoundry", "api": "https://yc-oss.github.io/api/batches/winter-2024/openfoundry.json" }, { "id": 29585, "name": "Mem0", "slug": "mem0", "former_names": [ "Embedchain Inc", "Embedchain" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/7d1e9679b389145f8635f2a0ae631bb24eba7cf8.png", "website": "https://mem0.ai", "all_locations": "San Francisco, CA, USA", "long_description": "Mem0 enhances AI assistants and agents with an intelligent memory layer, enabling personalized AI interactions. It remembers user preferences, adapts to individual needs, and continuously learns over time - ideal for customer support chatbots, AI assistants, and autonomous systems.", "one_liner": "The Memory layer for AI Agents", "team_size": 10, "industry": "B2B", "subindustry": "B2B -> Infrastructure", "launched_at": 1716511817, "tags": [ "Developer Tools", "Generative AI", "Open Source", "Infrastructure", "AI" ], "tags_highlighted": [], "top_company": false, "isHiring": true, "nonprofit": false, "batch": "Summer 2024", "status": "Active", "industries": [ "B2B", "Infrastructure" ], "regions": [ "United States of America", "America / Canada", "Remote", "Partly Remote" ], "stage": "Growth", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/mem0", "api": "https://yc-oss.github.io/api/batches/summer-2024/mem0.json" }, { "id": 29633, "name": "Unsloth AI", "slug": "unsloth-ai", "former_names": [], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/821f8850dee6e9f14ef87d19a86abcd55976c80c.png", "website": "https://unsloth.ai/", "all_locations": "San Francisco, CA, USA", "long_description": "Unsloth helps builders create custom models better & faster using RL and custom kernels. We're developing the all in one solution to help you create highly-accurate custom models 30x faster with 90% less memory use.\r\n\r\nWith over 10 million monthly model downloads and 40K GitHub stars, our mission is to make training and open-source the best it can be!", "one_liner": "Open-Source Reinforcement Learning (RL) & Fine-tuning for LLMs.", "team_size": 8, "industry": "B2B", "subindustry": "B2B -> Engineering, Product and Design", "launched_at": 1725425996, "tags": [ "Developer Tools", "Generative AI", "Open Source", "Infrastructure", "AI" ], "tags_highlighted": [], "top_company": false, "isHiring": true, "nonprofit": false, "batch": "Summer 2024", "status": "Active", "industries": [ "B2B", "Engineering, Product and Design" ], "regions": [ "United States of America", "America / Canada" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/unsloth-ai", "api": "https://yc-oss.github.io/api/batches/summer-2024/unsloth-ai.json" }, { "id": 29634, "name": "Random Labs", "slug": "random-labs", "former_names": [], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/fc21f071bc440027719fe93cbb326886a0f83528.png", "website": "https://randomlabs.ai", "all_locations": "San Francisco, CA, USA", "long_description": "Random Labs is building Slate. Slate is a coding agent designed to work with you for long hours on hard problems.", "one_liner": "Random labs is building long running autonomous coding agents.", "team_size": null, "industry": "B2B", "subindustry": "B2B -> Engineering, Product and Design", "launched_at": 1725599788, "tags": [ "Developer Tools", "Open Source", "AI", "AI Assistant" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Summer 2024", "status": "Active", "industries": [ "B2B", "Engineering, Product and Design" ], "regions": [ "United States of America", "America / Canada" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": true, "url": "https://www.ycombinator.com/companies/random-labs", "api": "https://yc-oss.github.io/api/batches/summer-2024/random-labs.json" }, { "id": 29695, "name": "Dench.com", "slug": "dench-com", "former_names": [ "Merse", "Merse Originals, Inc.", "Merse", "Dench.com", "Dench" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/ef306ea6f1d72c351b58047f5bd3c1644904cbd2.png", "website": "https://dench.com", "all_locations": "San Francisco, CA, USA", "long_description": "An OpenClaw Framwork that builds an AI Workforce paired with an in-built CRM, that lives in your communication channels, is online forever, knows your everything about your business. and does the tasks on your behalf only so you can click \"Approve\" every morning.\r\n\r\nBuild you own AI employees today...\r\n- Lead intake via Voice / SMS / Email and then updating the Contact / Matter / Case in the CRM.\r\n- Connects with Gmail / Outlook for AI to write replies (in draft for you to review) all ready to send, for every email that deserves your reply, so you don't spend time writing emails anymore.\r\n- Handles outbound sales completely, scrapes all the leads there possibly are on the internet, phone books, data brokers, and contacts customers, chats back and forth with them at scale, infinitely, parallely all at once.\r\n- Writes daily/weekly/monthly briefings and reports based on all the new context there is on the CRM every day/week/month. It finds out insights you possibly couldn't have found by looking at it all manually.\r\n- Customer Research AI agents: find powerful POCs of a company, check through your LinkedIn connection tree to find out how far apart in mutual connections you are from them, research their background, and send out intro texts / emails / call agents to connect you with the POC.\r\n\r\nand so much more. Contact us for enterprise needs.", "one_liner": "Open Source AI CRM built on top of OpenClaw", "team_size": 6, "industry": "B2B", "subindustry": "B2B -> Productivity", "launched_at": 1720334032, "tags": [ "Artificial Intelligence", "Workflow Automation", "Open Source", "CRM", "AI Assistant" ], "tags_highlighted": [], "top_company": false, "isHiring": true, "nonprofit": false, "batch": "Summer 2024", "status": "Active", "industries": [ "B2B", "Productivity" ], "regions": [ "United States of America", "America / Canada", "Remote", "Partly Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/dench-com", "api": "https://yc-oss.github.io/api/batches/summer-2024/dench-com.json" }, { "id": 29719, "name": "Manaflow", "slug": "manaflow", "former_names": [], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/f240894ee1866a817f8d66f9ed82314520294cbf.png", "website": "https://www.cmux.com", "all_locations": "San Francisco, CA, USA", "long_description": "Manaflow is an open-source applied AI lab building AI dev tools. We're the creators of cmux, the open source terminal for coding agents.", "one_liner": "Open source applied AI lab building next-gen devtools", "team_size": 3, "industry": "B2B", "subindustry": "B2B", "launched_at": 1715992295, "tags": [ "Artificial Intelligence", "Developer Tools", "Open Source" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Summer 2024", "status": "Active", "industries": [ "B2B" ], "regions": [ "United States of America", "America / Canada" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/manaflow", "api": "https://yc-oss.github.io/api/batches/summer-2024/manaflow.json" }, { "id": 29751, "name": "Opslane", "slug": "opslane", "former_names": [ "TBD", "Opslane", "Octopipe" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/d93b9323bb2d6146f1e9e67bf29441615e86a467.png", "website": "https://opslane.com", "all_locations": "San Francisco, CA, USA", "long_description": "Opslane verifies that AI-written code actually works. Opslane opens your app in a real browser, clicks through what the PR changed, and posts screenshots, video, and data checks as proof it works.", "one_liner": "Verify AI-generated code before you ship it", "team_size": 1, "industry": "B2B", "subindustry": "B2B -> Infrastructure", "launched_at": 1721925789, "tags": [ "Artificial Intelligence", "Developer Tools", "Open Source", "Enterprise", "DevOps" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Summer 2024", "status": "Active", "industries": [ "B2B", "Infrastructure" ], "regions": [ "United States of America", "America / Canada" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/opslane", "api": "https://yc-oss.github.io/api/batches/summer-2024/opslane.json" }, { "id": 29951, "name": "Rowboat Labs", "slug": "rowboat-labs", "former_names": [ "RowBoat Labs" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/8c4e76ac514dde1b24f29f53724cc0f032c90a91.png", "website": "https://www.rowboatlabs.com", "all_locations": "Bengaluru, KA, India; Remote", "long_description": "Rowboat is an AI coworker for everyday work - email, meetings, projects, and people. It builds a local knowledge graph from your work and uses it to draft emails, prep meetings, track projects, and get work done on your own computer. It comes with batteries included - meeting note capture, in-app browsing, search, and app integrations - plus MCP support for custom tools.", "one_liner": "Open-source AI coworker with memory ", "team_size": 3, "industry": "Consumer", "subindustry": "Consumer", "launched_at": 1723615480, "tags": [ "Productivity", "Open Source", "AI Assistant" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Summer 2024", "status": "Active", "industries": [ "Consumer" ], "regions": [ "India", "South Asia", "Remote", "Fully Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/rowboat-labs", "api": "https://yc-oss.github.io/api/batches/summer-2024/rowboat-labs.json" }, { "id": 29976, "name": "Freestyle", "slug": "freestyle", "former_names": [], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/3193d2e6673d05b7a76cddaa0bc355c6a2fd7e04.png", "website": "https://www.freestyle.sh", "all_locations": "San Francisco, CA, USA", "long_description": "Ben and Jacob met in Calculus class in 10th grade, and tried founding a startup in high school — it didn’t go anywhere.\r\n\r\nDuring high school, Ben lead the frontend team for the World Health Organization’s COVID-19 App Team.\r\n\r\nAfter high school, Jacob went to Apple and Ben went to college. When there was an opening on his team, Jacob had Ben apply, and Ben left UChicago to go work at Apple.\r\n\r\nThey spent about 2 years at Apple as Senior Engineers in the Conversational Engineering Department, before leaving to found Freestyle.\r\n\r\nFreestyle is directly inspired by what they saw as their failures of the tech they worked with at Apple.", "one_liner": "We run and deploy code your AI wrote", "team_size": 5, "industry": "B2B", "subindustry": "B2B -> Infrastructure", "launched_at": 1719115501, "tags": [ "Developer Tools", "Open Source", "Web Development", "Cloud Computing" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Summer 2024", "status": "Active", "industries": [ "B2B", "Infrastructure" ], "regions": [ "United States of America", "America / Canada" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/freestyle", "api": "https://yc-oss.github.io/api/batches/summer-2024/freestyle.json" }, { "id": 30212, "name": "superglue", "slug": "superglue", "former_names": [ "index commerce", "index labs" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/0d8702327beeb6c4e9700c883d54481531ce4f3b.png", "website": "https://superglue.ai/", "all_locations": "San Francisco, CA, USA", "long_description": "superglue replaces brittle SQL scripts, cron jobs, and one-off connectors that power enterprise operations with clean, versioned syncs you can actually understand and trust. It rebuilds the logic behind integrations, so migrating systems, adding tools, or scaling processes no longer breaks everything. Companies running on superglue roll out AI projects faster, spend less on maintenance, and future-proof their business for continuous optimization.", "one_liner": "AI that fixes enterprise glue", "team_size": 4, "industry": "B2B", "subindustry": "B2B -> Engineering, Product and Design", "launched_at": 1737761136, "tags": [ "Open Source", "API", "Enterprise", "Enterprise Software", "AI" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Winter 2025", "status": "Active", "industries": [ "B2B", "Engineering, Product and Design" ], "regions": [ "United States of America", "America / Canada" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/superglue", "api": "https://yc-oss.github.io/api/batches/winter-2025/superglue.json" }, { "id": 30216, "name": "Sublingual", "slug": "sublingual", "former_names": [ "Khipu" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/c536945e04bdc8b405d2bb35c81631f9b7c3c738.png", "website": "https://sublingual.ai/", "all_locations": "San Francisco, CA, USA", "long_description": "Our desktop app helps teams stay focused on shipping.", "one_liner": "Daily productivity tracker", "team_size": 2, "industry": "B2B", "subindustry": "B2B", "launched_at": 1740613527, "tags": [ "Developer Tools", "Open Source", "Infrastructure", "AI" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Winter 2025", "status": "Inactive", "industries": [ "B2B" ], "regions": [ "United States of America", "America / Canada" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/sublingual", "api": "https://yc-oss.github.io/api/batches/winter-2025/sublingual.json" }, { "id": 30283, "name": "Confident AI", "slug": "confident-ai", "former_names": [], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/2e739bf439400b44a89bc15e023cbe6bca3f9e00.png", "website": "https://confident-ai.com", "all_locations": "San Francisco, CA, USA", "long_description": "Confident AI provides enterprises an all-in-one platform to evaluate, observe, red team, and govern AI applications. Built by the creators of DeepEval (16k stars, 8m monthly downloads), Confident AI is able to offer battle-tested, open-source evaluation algorithms while providing the infrastructure needed for teams to stay confident their AI systems.", "one_liner": "The LLM Eval and Observability Platform for AI Quality", "team_size": 7, "industry": "B2B", "subindustry": "B2B -> Engineering, Product and Design", "launched_at": 1736794966, "tags": [ "Developer Tools", "Generative AI", "Open Source", "AI" ], "tags_highlighted": [], "top_company": false, "isHiring": true, "nonprofit": false, "batch": "Winter 2025", "status": "Active", "industries": [ "B2B", "Engineering, Product and Design" ], "regions": [ "United States of America", "America / Canada" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/confident-ai", "api": "https://yc-oss.github.io/api/batches/winter-2025/confident-ai.json" }, { "id": 30304, "name": "Mastra", "slug": "mastra", "former_names": [], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/a6e5f319cbd11b23e8938be90ed120209a914c0a.png", "website": "https://mastra.ai", "all_locations": "San Francisco, CA, USA; Remote", "long_description": "Mastra is the easiest way to build a production AI application, built by the team that brought you Gatsby. We provide a complete set of AI primitives: workflows for complex operations, agents for autonomous decisions, RAG for knowledge integration, and evals for quality & accuracy. Mastra is open-source, modular, and built in Typescript for product developers. You can deploy Mastra on any cloud, and it gives you a straightforward syntax to solve the hardest problems building with AI: human-in-the-loop workflows, agent memory and tool selection, and output quality. ", "one_liner": "The Javascript framework for building AI agents, from the Gatsby devs", "team_size": 30, "industry": "B2B", "subindustry": "B2B -> Engineering, Product and Design", "launched_at": 1737136768, "tags": [ "Artificial Intelligence", "Developer Tools", "Open Source", "AI" ], "tags_highlighted": [], "top_company": false, "isHiring": true, "nonprofit": false, "batch": "Winter 2025", "status": "Active", "industries": [ "B2B", "Engineering, Product and Design" ], "regions": [ "United States of America", "America / Canada", "Remote", "Fully Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/mastra", "api": "https://yc-oss.github.io/api/batches/winter-2025/mastra.json" }, { "id": 30319, "name": "Corsair", "slug": "corsair", "former_names": [ "Demeter" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/669230895e9a350309e4b696d01d846593838da1.png", "website": "https://www.corsair.dev", "all_locations": "New York, NY, USA; Remote", "long_description": "Corsair connects your app to any other API. Use Corsair to build custom agents, dashboards, and workflows with hundreds of different integrations. ", "one_liner": "Connect your users to their apps", "team_size": 2, "industry": "B2B", "subindustry": "B2B -> Engineering, Product and Design", "launched_at": 1739227592, "tags": [ "Developer Tools", "B2B", "Workflow Automation", "Open Source", "Personalization" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Winter 2025", "status": "Active", "industries": [ "B2B", "Engineering, Product and Design" ], "regions": [ "United States of America", "America / Canada", "Remote", "Fully Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/corsair", "api": "https://yc-oss.github.io/api/batches/winter-2025/corsair.json" }, { "id": 30341, "name": "Browser Use", "slug": "browser-use", "former_names": [ "browser-use" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/c098c79c1154d878f59439428e54fe98a83295a2.png", "website": "https://browser-use.com", "all_locations": "San Francisco, CA, USA", "long_description": "We enable AI to control the browser. \r\nBrowser-use is the biggest open-source web agent project. \r\nWe got 40k stars in the last 3 months.", "one_liner": "Leading open-source web agent project with 50k stars in 3 months", "team_size": 7, "industry": "B2B", "subindustry": "B2B", "launched_at": 1734712888, "tags": [ "Artificial Intelligence", "Open Source", "API", "Automation" ], "tags_highlighted": [], "top_company": false, "isHiring": true, "nonprofit": false, "batch": "Winter 2025", "status": "Active", "industries": [ "B2B" ], "regions": [ "United States of America", "America / Canada" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/browser-use", "api": "https://yc-oss.github.io/api/batches/winter-2025/browser-use.json" }, { "id": 30365, "name": "Mentra", "slug": "mentra", "former_names": [], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/7244027171670b7caf312b35e16b9e5cfdd49164.png", "website": "https://mentra.glass", "all_locations": "San Francisco, CA, USA", "long_description": "Mentra is building the open source operating system for smart glasses. The smart glasses hardware is finally ready, so we're building the OS and app store to power the next computing platform.", "one_liner": "Building the open source smart glasses operating system.", "team_size": 12, "industry": "Consumer", "subindustry": "Consumer -> Virtual and Augmented Reality", "launched_at": 1738358223, "tags": [ "Artificial Intelligence", "Hardware", "Consumer", "Open Source", "AR" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Winter 2025", "status": "Active", "industries": [ "Consumer", "Virtual and Augmented Reality" ], "regions": [ "United States of America", "America / Canada" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": true, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/mentra", "api": "https://yc-oss.github.io/api/batches/winter-2025/mentra.json" }, { "id": 30405, "name": "nao Labs", "slug": "nao-labs", "former_names": [], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/9572a4af92fd7a09438369c8555334bcd54574f8.png", "website": "https://getnao.io/", "all_locations": "San Francisco, CA, USA", "long_description": "nao is an open source framework to build and deploy analytics agent.\r\nCreate the context of your analytics agent with nao-core cli: data, metadata, modeling, rules, etc. Deploy a UI for anyone to chat with your agent and run analytics on your data.", "one_liner": "Open Source Analytics Agent", "team_size": 2, "industry": "B2B", "subindustry": "B2B -> Analytics", "launched_at": 1744958361, "tags": [ "Analytics", "Open Source", "AI" ], "tags_highlighted": [], "top_company": false, "isHiring": true, "nonprofit": false, "batch": "Spring 2025", "status": "Active", "industries": [ "B2B", "Analytics" ], "regions": [ "United States of America", "America / Canada" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/nao-labs", "api": "https://yc-oss.github.io/api/batches/spring-2025/nao-labs.json" }, { "id": 30420, "name": "Cua", "slug": "cua", "former_names": [ "Cua", "c/ua" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/388c63ca4d8b705c5dcaf89934394977693456e0.png", "website": "https://cua.ai", "all_locations": "San Francisco, CA, USA", "long_description": "Give every agent a cloud desktop. Built for Claude Code, Codex, OpenClaw, and any computer-use agents.", "one_liner": "Give every agent a cloud desktop", "team_size": 3, "industry": "B2B", "subindustry": "B2B -> Engineering, Product and Design", "launched_at": 1744392234, "tags": [ "Open Source" ], "tags_highlighted": [], "top_company": false, "isHiring": true, "nonprofit": false, "batch": "Spring 2025", "status": "Active", "industries": [ "B2B", "Engineering, Product and Design" ], "regions": [ "United States of America", "America / Canada" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": true, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/cua", "api": "https://yc-oss.github.io/api/batches/spring-2025/cua.json" }, { "id": 30432, "name": "HelixDB", "slug": "helixdb", "former_names": [], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/64b0b8869e482d2c399a6856e5127933c31381bd.png", "website": "https://helix-db.com", "all_locations": "London, England, United Kingdom", "long_description": "As AI agents replace traditional software, they need a way to store, recall, and reason over contextual data. HelixDB gives them all of that in one system. We’re building the knowledge infrastructure every AI agent will depend on.", "one_liner": "The fastest & most scalable graph-vector database on the market", "team_size": 6, "industry": "B2B", "subindustry": "B2B -> Engineering, Product and Design", "launched_at": 1747978820, "tags": [ "Developer Tools", "Open Source", "Infrastructure", "AI", "Databases" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Spring 2025", "status": "Active", "industries": [ "B2B", "Engineering, Product and Design" ], "regions": [ "United Kingdom", "Europe", "Remote", "Partly Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/helixdb", "api": "https://yc-oss.github.io/api/batches/spring-2025/helixdb.json" }, { "id": 30437, "name": "Kaelio", "slug": "kaelio", "former_names": [], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/c4c744ee428be44ba894f8b477449386dca44045.png", "website": "https://kaelio.com/", "all_locations": "", "long_description": "Kaelio is the company behind ktx, the open-source context layer that makes data agents reliable. \r\n\r\nData agents today fail because they lack structured context and determinism. Metrics are defined in five places, governed in none. Teams spend months on semantic layer projects that never finish.\r\n\r\nktx fixes that. Connect your warehouse, BI tools, and docs. ktx builds the context layer automatically. Your team governs it. Any agent can query it. One context layer across your entire data stack.", "one_liner": "The open-source context layer for data agents", "team_size": 8, "industry": "B2B", "subindustry": "B2B", "launched_at": 1747200146, "tags": [ "Open Source", "AI" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Spring 2025", "status": "Active", "industries": [ "B2B" ], "regions": [ "Unspecified" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/kaelio", "api": "https://yc-oss.github.io/api/batches/spring-2025/kaelio.json" }, { "id": 30452, "name": "Better Auth", "slug": "better-auth", "former_names": [], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/1f768f164c4dd92121e70abbd42713af3118834a.png", "website": "https://better-auth.com/", "all_locations": "San Francisco, CA, USA", "long_description": "Better Auth is a comprehensive authentication framework for TypeScript that lets you implement everything from simple auth flows to enterprise-grade systems directly on your own database, embedded in your backend. It’s loved by developers all over the world and endorsed by leading voices in the ecosystem.\r\n\r\nOn top of the framework, Better Auth also provides an infrastructure layer to help you scale with user management and analytics, bot and fraud detection, transactional email and SMS, global session storage and more.", "one_liner": "The authentication framework for TypeScript", "team_size": 4, "industry": "B2B", "subindustry": "B2B -> Security", "launched_at": 1744888506, "tags": [ "Developer Tools", "Security", "Open Source" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Spring 2025", "status": "Active", "industries": [ "B2B", "Security" ], "regions": [ "United States of America", "America / Canada", "Remote", "Partly Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/better-auth", "api": "https://yc-oss.github.io/api/batches/spring-2025/better-auth.json" }, { "id": 30510, "name": "Cactus", "slug": "cactus", "former_names": [], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/38edcfba2831cce5f05a5da045992ae4f758e655.png", "website": "https://www.cactuscompute.com/", "all_locations": "San Francisco, CA, USA", "long_description": "Check out the project: https://github.com/cactus-compute/cactus", "one_liner": "Low-latency AI engine for mobile devices & wearables", "team_size": 8, "industry": "B2B", "subindustry": "B2B -> Engineering, Product and Design", "launched_at": 1752189935, "tags": [ "Artificial Intelligence", "Developer Tools", "Hard Tech", "Open Source", "AI" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Summer 2025", "status": "Active", "industries": [ "B2B", "Engineering, Product and Design" ], "regions": [ "United States of America", "America / Canada", "Remote", "Partly Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": true, "url": "https://www.ycombinator.com/companies/cactus", "api": "https://yc-oss.github.io/api/batches/summer-2025/cactus.json" }, { "id": 30665, "name": "Pangolin", "slug": "pangolin", "former_names": [ "Fossorial" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/e255c0b8547eae92642ef5a790e42e33f9bed016.png", "website": "https://pangolin.net", "all_locations": "San Francisco, CA, USA", "long_description": "Pangolin is an open-source, identity-based remote access platform built on WireGuard that enables secure, seamless connectivity to private and public resources.", "one_liner": "Identity-aware VPN and proxy for remote access to anything, anywhere.", "team_size": 3, "industry": "B2B", "subindustry": "B2B -> Infrastructure", "launched_at": 1752801073, "tags": [ "Open Source", "Enterprise Software", "Networks" ], "tags_highlighted": [], "top_company": false, "isHiring": true, "nonprofit": false, "batch": "Summer 2025", "status": "Active", "industries": [ "B2B", "Infrastructure" ], "regions": [ "United States of America", "America / Canada", "Remote", "Partly Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/pangolin", "api": "https://yc-oss.github.io/api/batches/summer-2025/pangolin.json" }, { "id": 30694, "name": "Epicenter", "slug": "epicenter", "former_names": [], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/15e87b5dae1ddc0ace7595505c49a86f51b6979a.png", "website": "https://epicenter.so", "all_locations": "San Francisco, CA, USA", "long_description": "Epicenter is an ecosystem of open-source, local-first apps that share a memory. We store all your work—notes, transcripts, chat histories—in a single folder of plain text and SQLite. Every tool we build shares this memory: your text editor, personal assistant, etc.. It's open, tweakable, and yours. Grep it, open it in Obsidian, host it wherever you like. The choice is yours.\r\n\r\nOur vision is to build a personal workspace where you own your data, choose your own AI models, and replace siloed apps with open, interoperable alternatives. All while preserving authenticity and being free and open source. ❤️", "one_liner": "ChatGPT's memory feature in an open, portable format", "team_size": 1, "industry": "Consumer", "subindustry": "Consumer", "launched_at": 1754070642, "tags": [ "SaaS", "Productivity", "Open Source", "Note-taking", "AI Assistant" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Summer 2025", "status": "Active", "industries": [ "Consumer" ], "regions": [ "United States of America", "America / Canada" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/epicenter", "api": "https://yc-oss.github.io/api/batches/summer-2025/epicenter.json" }, { "id": 30710, "name": "Manufact", "slug": "manufact", "former_names": [ "mcp-use", "Manufact (formerly mcp-use)" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/3838f80b214ed1fcda53a2778860e8be11cfdb0d.png", "website": "https://manufact.com", "all_locations": "San Francisco, CA, USA", "long_description": "Manufact is the MCP cloud platform to get your product ready for Claude Connectors marketplace, ChatGPT App Store and any AI agent that supports MCP.\r\nWe're the team behind mcp-use SDK, the open-source framework for building MCP Apps with 10k github stars and 8M+ downloads across python and typescript.\r\n\r\nIt's the fastest and most complete solution for production-ready MCP servers.", "one_liner": "Cloud infrastructure for MCP servers and Claude / ChatGPT apps.", "team_size": 5, "industry": "B2B", "subindustry": "B2B -> Infrastructure", "launched_at": 1752861544, "tags": [ "Developer Tools", "B2B", "Open Source", "Infrastructure", "AI" ], "tags_highlighted": [], "top_company": false, "isHiring": true, "nonprofit": false, "batch": "Summer 2025", "status": "Active", "industries": [ "B2B", "Infrastructure" ], "regions": [ "United States of America", "America / Canada" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/manufact", "api": "https://yc-oss.github.io/api/batches/summer-2025/manufact.json" }, { "id": 30711, "name": "Char", "slug": "char", "former_names": [ "Hyprnote" ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/aca02a57c5f38896120f1fe6767d1975b6a6b522.png", "website": "https://char.com", "all_locations": "San Francisco, CA, USA", "long_description": "Char is a daily notepad that finishes your todos for you. Type a checkbox, and an agent picks it up — researching, drafting, or scheduling on your behalf. Stay in command. Char does the work.", "one_liner": "The AI notepad that knows and works for you", "team_size": 4, "industry": "B2B", "subindustry": "B2B -> Productivity", "launched_at": 1755302445, "tags": [ "SaaS", "Productivity", "Open Source", "AI", "AI Assistant" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Summer 2025", "status": "Active", "industries": [ "B2B", "Productivity" ], "regions": [ "United States of America", "America / Canada", "Remote", "Partly Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/char", "api": "https://yc-oss.github.io/api/batches/summer-2025/char.json" }, { "id": 30939, "name": "Expected Parrot", "slug": "expected-parrot", "former_names": [ "Expected Parrot, Inc." ], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/fb8df693185d3d01a607d26dc392fa6f5307be2a.png", "website": "https://www.expectedparrot.com", "all_locations": "Boston, MA, USA", "long_description": "Expected Parrot helps companies simulate their customers with AI agents to explore pricing, product, marketing, communications and other scenarios at scale. Our open-source library and no-code web app let you design custom agent personas and conduct interviews and surveys with them using LLMs of your choice to generate results and reports. Everything is cached and reproducible, and you can send the same surveys to human respondents to validate results in the same interface.", "one_liner": "Simulate your customers with AI agents", "team_size": 5, "industry": "B2B", "subindustry": "B2B", "launched_at": 1760614076, "tags": [ "Generative AI", "SaaS", "Open Source" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Fall 2025", "status": "Active", "industries": [ "B2B" ], "regions": [ "United States of America", "America / Canada", "Remote", "Partly Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/expected-parrot", "api": "https://yc-oss.github.io/api/batches/fall-2025/expected-parrot.json" }, { "id": 30946, "name": "Sourcebot", "slug": "sourcebot", "former_names": [], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/8dc3d95366a9f12c7989780cf364009423a55b54.png", "website": "https://www.sourcebot.dev/", "all_locations": "San Francisco, CA, USA", "long_description": "Sourcebot is an open source code understanding platform for massive codebases. We’re used by thousands of engineers in some of the largest companies in the world, including NVIDIA, Red Hat, Wikimedia, and Arista Networks.\r\n\r\nUnderstanding code, not writing it, is the primary bottleneck for large engineering teams. For developers, this means onboarding onto complex codebases faster. For AI agents, it means getting the necessary code context to minimize hallucinations and maximize cohesion within the wider codebase.\r\n\r\nSourcebot solves this by giving developers and AI agents the ability to regex search across millions of lines of code instantly, as well as ask questions across thousands of repos using any flagship reasoning model. Being open source and on-prem, we can get deployed in enterprises within minutes before other tools even get approval.\r\n\r\nWe met a decade ago at McGill University and have been building together full time for over 2 years. We’ve personally felt the pain of understanding large codebases while working at Microsoft, EA, Ubisoft, Google, and Meta.", "one_liner": "Helping humans and AI agents understand massive codebases", "team_size": 3, "industry": "B2B", "subindustry": "B2B -> Engineering, Product and Design", "launched_at": 1759606313, "tags": [ "Artificial Intelligence", "Developer Tools", "Open Source" ], "tags_highlighted": [], "top_company": false, "isHiring": true, "nonprofit": false, "batch": "Fall 2025", "status": "Active", "industries": [ "B2B", "Engineering, Product and Design" ], "regions": [ "United States of America", "America / Canada" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/sourcebot", "api": "https://yc-oss.github.io/api/batches/fall-2025/sourcebot.json" }, { "id": 31368, "name": "Zenbu", "slug": "zenbu-2", "former_names": [], "small_logo_thumb_url": "https://bookface-images.s3.amazonaws.com/small_logos/cac51a9c6d5e214ddcaeb4498d21b0b6a8e87e58.png", "website": "https://www.zenbu.dev/", "all_locations": "San Francisco, CA, USA; Remote", "long_description": "Zenbu is an extensible IDE for orchestrating coding agents. Shape it around exactly how you and your team work.", "one_liner": "The extensible IDE for coding agents", "team_size": 1, "industry": "B2B", "subindustry": "B2B -> Engineering, Product and Design", "launched_at": 1780458165, "tags": [ "Artificial Intelligence", "Developer Tools", "Open Source" ], "tags_highlighted": [], "top_company": false, "isHiring": false, "nonprofit": false, "batch": "Spring 2026", "status": "Active", "industries": [ "B2B", "Engineering, Product and Design" ], "regions": [ "United States of America", "America / Canada", "Remote", "Fully Remote" ], "stage": "Early", "app_video_public": false, "demo_day_video_public": false, "app_answers": null, "question_answers": false, "url": "https://www.ycombinator.com/companies/zenbu-2", "api": "https://yc-oss.github.io/api/batches/spring-2026/zenbu-2.json" } ]