Auth.js - Alternatives & Competitors

Stack Auth is an open-source suite of tools for authentication and user management that enables developers to implement secure authentication in minutes with features like organizations & teams, permissions & RBAC, and third-party OAuth integration.

• Freemium
• From 49$

Next.js AI Startup Boilerplate is a comprehensive toolkit with pre-built components designed to help you launch your AI business quickly and efficiently. It includes everything needed to bootstrap your startup, with no coding required.

• Pay Once

Cntxtkit is a comprehensive NextJS & AI wrapper boilerplate that helps developers accelerate their web development process with pre-built integrations for payments, authentication, email, database, and styling solutions.

• Paid
• From 30$

Authelia delivers secure, scalable, and efficient identity and access management through multi-factor authentication and single sign-on for web applications.

• Free

DevPortfolioTemplates provides open source, professionally designed portfolio templates built with Next.js and modern web technologies for developers to showcase their work effectively.

• Other

MkSaaS empowers developers to launch AI-powered SaaS products rapidly using a feature-rich Next.js boilerplate, integrated with built-in AI, payments, authentication, and customizable themes.

• Pay Once

AuthGPTs simplifies API security and SaaS deployment with a one-time purchase, offering tools for OAuth2, analytics, and payment integration. It is a cost-effective solution designed to streamline the launch of GPTs as complete SaaS products.

• Pay Once

TourGuide JS is a customizable, framework-agnostic JavaScript library designed for seamless user onboarding and guided tours within web applications.

• Free

useSAASkit provides a Next.js boilerplate with integrated AI capabilities, auth, billing, and marketing tools, enabling developers to launch AI SaaS applications quickly.

• Pay Once

server.js is a comprehensive Node.js server framework with built-in features like WebSocket support, modern ES7+ syntax, and Express compatibility, designed for simplicity and productivity in web development.

• Free

GetShipkit offers a free, open-source toolkit for developers to rapidly build, deploy, and scale production-ready SaaS applications using best practices and a modern tech stack.

• Free

Appliful is a NextJS-based web development toolkit that helps developers build production-ready SaaS applications with integrated AI capabilities, authentication, payments, and essential features, saving over 100 development hours.

• Pay Once

Nextbase is an AI-powered starter kit for building SaaS applications with pre-configured features like authentication, payments, and admin panels, designed to save development time and enhance productivity.

• Pay Once

NextJet offers a comprehensive, feature-rich Next.js SaaS boilerplate that streamlines the launch of web applications, enabling developers and startups to save time, increase productivity, and focus on business growth.

• Pay Once

Anon is a developer toolkit that enables AI agents to authenticate and take actions on behalf of users across websites without APIs, providing secure user-permissioned integrations.

• Contact for Pricing

Stytch provides comprehensive APIs and SDKs for authentication, authorization, security, and fraud prevention, enabling developers to focus on core product development.

• Freemium

SuperFast provides a production-ready Next.js boilerplate featuring built-in authentication, payments, pre-built UI components, SEO optimization, and AI-generated legal documents to help developers launch SaaS products quickly.

• Pay Once

FULL STACK AI lets you generate full-stack Next.js applications from simple AI prompts using a dedicated CLI. The generated apps include TypeScript, Tailwind, Prisma, Postgres, tRPC, authentication, Stripe, and Resend.

• Free

FACEIO offers secure, cross-browser facial recognition SDKs for passwordless authentication on websites and applications, featuring easy integration and liveness detection.

• Freemium
• From 29$

JS Syntax is an educational tool that provides interactive examples and explanations for modern JavaScript features, helping developers learn and understand ES6+ syntax effectively.

• Free

SSOJet enables SaaS companies, including AI startups, to quickly integrate Enterprise Single Sign-On (SSO) and Directory Sync (SCIM) without altering their existing authentication systems. Achieve enterprise readiness and enhance security in days.

• Free Trial
• From 99$

Supastarter is a Next.js SaaS starter kit designed to accelerate development by providing a ready-to-use boilerplate with features like authentication, payments, and AI integration support.

• Pay Once

Nextacular is an open-source starter kit built with modern full-stack technologies that helps developers build multi-tenant SaaS applications with pre-packaged features like authentication, billing, and database integration.

• Free

Launch Express accelerates SaaS development by offering a pre-built foundation with AI integration, authentication, payment processing, analytics, and responsive UI components, helping founders launch products in days instead of months.

• Pay Once

BuilderKit is a highly modular NextJS AI Boilerplate that allows developers to quickly ship AI applications. It includes pre-built apps, AI modules, and integrations, saving significant development effort.

• Pay Once

ProStack is a comprehensive Next.js 15 boilerplate that provides everything needed to launch SaaS applications quickly, including AI integrations, billing, authentication, and team management features.

• Pay Once

Trails JS is a web development platform offering articles and guidance on programming languages and technologies, helping developers make informed learning choices in 2023 and beyond.

• Other

AI SDK is an open-source toolkit for TypeScript developers, providing a unified API to integrate AI capabilities into applications with ease. It supports multiple frameworks and enables dynamic, AI-powered user experiences.

• Free

Why Me offers a streamlined and secure login experience. Users can quickly access the platform using their existing GitHub, Google, or Twitter accounts.

• Free

Makerkit is a comprehensive SaaS starter kit for building and launching production-ready SaaS applications using React and Next.js, featuring AI integrations, robust authentication, billing, and extensive plugins.

• Pay Once

Zenlogin leverages AI to detect suspicious login attempts and alerts your users instantly, providing robust account security with easy integration for developers.

• Freemium
• From 199$

Nexty.dev is a production-ready, full-stack SaaS starter template for Next.js and Supabase, featuring integrated AI capabilities for rapid development of modern applications, including content, AI, and subscription services.

• Pay Once

AI Starter Kit is a full-stack SaaS template built with Next.js, offering plug-and-play AI integrations and essential features to help developers and startups launch AI-powered products faster.

• Pay Once

staarter.dev is a comprehensive Next.js SaaS template that accelerates development with pre-configured features like authentication, billing, and localization, designed to save developers 50+ hours on core setup.

• Pay Once

AI JS Rocks is a curated directory showcasing inspirational AI-powered JavaScript applications and projects.

• Free

NLKit offers open-source JavaScript libraries for developers to embed conversational AI assistants into web applications with various backend integrations.

• Freemium

Supanext is a Next.js and Supabase starter kit designed to help you quickly launch SaaS and AI applications, converting ideas into income.

• Pay Once

Keet is a YCombinator-backed platform that enables businesses to integrate with platforms lacking APIs or having complex authentication requirements, allowing automated data extraction and actions on behalf of customers.

• Freemium
• From 650$

Nexalio is an AI-powered platform that generates complete Next.js web applications with built-in features including authentication, database integration, payment processing, and more - all from your core business idea.

• Usage Based
• From 100$

MonoKit is a Turborepo toolkit designed to accelerate the development of production-ready applications. It features a professionally engineered Next.js and Fastify monorepo, with an AI-friendly code structure for enhanced code suggestions.

• Pay Once

marker.js is a JavaScript library that enables easy image annotation within web apps, offering customizable components and compatibility with any modern framework. Ideal for developers seeking flexible, interactive visual feedback tools.

• Freemium

MakeBlog AI provides a fast, hassle-free solution for setting up professional Next.js blogs with AI-generated content.

• Pay Once

Amplify Security automates code vulnerability remediation, providing instant fixes and significant cost savings for development teams.

• Freemium

nxtblog.ai is an AI-powered CMS and content generation platform specifically designed for NextJS websites, offering automated SEO optimization and blog content creation to help businesses improve their search engine rankings.

• Freemium
• From 10$

Open WebUI is a self-hosted AI interface that operates entirely offline and adapts to your individual workflow. It's extensible and designed for various applications.

• Free

AI Assistify is an AI-powered platform that enables users to build custom agents, automate workflows, and enhance productivity without coding. It offers access to over 50 AI models, enterprise-grade security, and 24/7 support.

• Paid
• From 49$

AgentForge is a comprehensive NextJS boilerplate platform that enables developers to build, deploy, and test AI applications with pre-built agents, customizable workflows, and integrated tools like LangChain, Langgraph, and OpenAI.

• Pay Once

Flags SDK is a free, open-source library that enables developers to implement feature flags in Next.js and SvelteKit applications, supporting A/B testing and controlled rollouts with a simple declarative API.

• Free

Aithenticate is a comprehensive WordPress plugin and web solution that helps websites transparently disclose their use of AI-generated content through visual badges and detailed company profiles.

• Freemium
• From 6$

NextStep is an open-source onboarding library that enables developers to create engaging, interactive product tours for Next.js and React applications with smooth animations and full customization capabilities.

• Free