JRuby

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A high performance, stable, fully threaded Java implementation of the Ruby programming language

What is JRuby?

JRuby is the effort to recreate the Ruby (http://www.ruby-lang.org) interpreter in Java. The Java version is tightly integrated with Java to allow both to script any Java class and to embed the interpreter into any Java application. See the docs directory for more information.
JRuby is a tool in the Languages category of a tech stack.

Who is using it?

17 companies use JRuby in their tech stacks, including Soundcloud, Groupon.com, and Runtastic.

Soundcloud

Groupon.com

Runtastic

esa

Hund

Nuxeo

Lookout

RELEX

Currency Cloud

Cask

stack

Advertate

Why developers like JRuby

Java
Faster than Ruby
JVM
Built-in Testing
Deploy as executable jay
Open source
Supports native Ruby gems out the box
Threads
Garbage collection built-in