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Who is using JRuby?

Sharing experiences and learning from other users is essential. We are frequently asked who is using a particular feature of JRuby so people can get in contact with other users to share experiences and best practices. People also often want to know if product/platform X supports JRuby. While the JRuby Matrix community allows users to get in touch, it can be challenging to find this information quickly.

The following is a directory of adopters to help identify users of individual features. The users themselves directly maintain the list.

Adding yourself as a user

If you are using JRuby or it is integrated into your product, service, or platform, please consider adding yourself as a user with a quick description of your use case by opening a pull request to this file and adding a section describing your usage of JRuby:

If you are open to others contacting you about your use of JRuby, add your Matrix nickname or contact info as well.

### Name of user (company)

* **Desc**: Description
* **Usage**: Usage of features
* **Since**: How long have you used JRuby (optional)
* **Link**: Link with further information (optional)
* **Contact**: Contacts available for questions (optional)

Example entry:

### The JRuby Project

* **Desc**: The project that brings you JRuby
* **Usage**: JRuby uses JRuby to build JRuby via our Maven toolchain
* **Since**: 2009
* **Link**: https://github.com/jruby/jruby
* **Contact**: @headius, @enebo

Requirements to be listed

  • You must represent the user listed. Do NOT add entries on behalf of other users.
  • There is no minimum deployment size but we request to list permanent production deployments only, i.e., no demo or trial deployments. Commercial use is not required. A well-done home lab setup can be equally interesting as a large-scale commercial deployment.

Users

AsciidoctorJ

  • Desc: AsciidoctorJ is a Java port of the Asciidoctor document processor, a fast and open source text processor and publishing toolchain for converting AsciiDoc content to HTML 5, PDF and other formats That is implemented in Ruby.
  • Usage: JRuby is used to run the original Asciidoctor processor inside the JVM. JRuby allows to provide Java APIs and SPIs that make the port feel like a native Java library.
  • Since: 2014
  • Links: asciidoctor.org, asciidoctorj, docs
  • Contact: @robertpanzer

SubstituteAlert Inc.

Additional content in the JRuby Success Stories wiki page.

  • Desc: We make SubAlert, the top rated substitute teacher app in the U.S. and Canada.
  • Usage: JRuby is used for scaling this highly parallel application in ways that CRuby can't match. Java integration with the Firebase library allows sending Android notifications, even though there's no official support for Ruby. The JRuby team has been amazingly responsive and we are really happy using JRuby for over 12 years at the time of this writing! 🎉
  • Since: 2013
  • Links: https://www.subalert.com, iPhone App, Android App
  • Contact: @mohamedhafez83

eazyBI

  • Desc: eazyBI is a Business Intelligence application for creating reports, charts, and dashboards from many different data sources. eazyBI's most popular integration is with Atlassian Jira and other Jira apps. It is one of the top-selling third-party apps on the Atlassian Marketplace.
  • Usage: eazyBI is a Ruby on Rails application that runs on JRuby. JRuby allows embedding a Java-based Mondrian OLAP engine, integrating with Apache POI and Batik libraries, as well as packaging eazyBI as a Jira Data Center plugin (Java jar file). eazyBI is deployed both in the cloud as well as installed on thousands of customer servers running Linux or Windows and connecting to PostgreSQL, MySQL, Oracle, and Microsoft SQL Server databases. One of the eazyBI core components is mondrian-olap which provides JRuby DSL for using the Mondrian OLAP engine.
  • Since: 2011
  • Links: eazyBI
  • Contact: @rsim

GoCD (Go Continuous Delivery)

  • Desc: GoCD is an open-source self-hostable continuous delivery / integration automation server, automating the software build-test-release cycle to enable frequent and reliable software builds & deployments. It helps teams visualise and streamline complex development workflows by allowing teams to visualize their entire delivery process through "pipelines as code" ensuring that software can be released at any time.
  • Usage: While originally used more widely within GoCD, JRuby/Rails/JRuby-Rack is still used via Jetty for server-side rendering of various interfaces for users to interact with their pipeline job runs and interoperate with the rest of the Java-based server.
  • Since: 2007
  • Links: gocd.org, source, docs
  • Contact: @chadlwilson

Zendesk

  • Desc: Zendesk is a leading customer support SaaS solution.
  • Usage: We use JRuby for the search indexer of our core support product to fetch data from different data stores and push it to our search engine. JRuby was chosen due to its multithreading capabilities and the Java library ecosystem.
  • Link: Presentation slides with more context

openHAB

  • Description: A vendor and technology agnostic open-source home automation platform written in Java.
  • Usage: Leverages JRuby as one of several scripting engines (alongside JavaScript and Python) for its OSGi-based architecture, allowing users to write complex automation rules and logic via a dedicated JRuby scripting add-on.
  • Since: 2020
  • Link: openHAB