JRuby is a high performance, stable, fully threaded Java implementation of the Ruby programming language.

JRuby Downloads Current Release: JRuby 10.0.3.0 JRuby 10.0.3.0 is our point release of our Ruby 3.4.x support. Please check out our release notes for more information. JRuby 10.0.3.0 Binary .tar.gz …

JRuby might also be available as OS packages for your favorite package manager, check the JRuby Distributions page for more information.

API Docs Browse JRuby API Javadocs online We greatly appreciate patches and pull requests for documentation updates. Please visit the Contribute page for more information on sending JRuby …

Apr 14, 2025 · This release marks a big leap forward for JRuby users, and we are standing by to help with your transition from JRuby 9.x or migration from CRuby. Support services are available to help …

Apr 9, 2025 · I am very excited to introduce you to JRuby 10, our biggest leap forward since “JRuby 9000” was released almost a decade ago. With up-to-date Ruby compatibility, support for modern …

Complete jar: The “complete” jar, containing all standad libraries and preinstalled gems, is in the jruby-complete...jar file. Other artifacts: The full complement of Maven artifacts are available as snapshots.

Apr 9, 2025 · I am very excited to introduce you to JRuby 10, our biggest leap forward since “JRuby 9000” was released almost a decade ago. With up-to-date Ruby compatibility, support for modern …

Thursday, August 07 2025 The JRuby community is pleased to announce the release of JRuby 10.0.2.0. Homepage: https://www.jruby.org/ Download: https://www.jruby.org/download JRuby 10.0.2.x targets …

Sep 4, 2013 · Backported JRuby .sh launcher features from JRuby 10, including AppCDS flags for improved startup time. (#8565, #8625, #8626, #8652, #8653, #8656, #8754) 56 Issues and PRs …