lists.ruby-lang.org
TruffleRuby is an experimental Ruby implementation that tries to achieve ~10x performance over MRI. This has been on our radar...
celerity.rubyforge.org
Celerity is a JRuby wrapper around HtmlUnit – a headless Java browser with JavaScript support. It provides a simple API for...
ruboto.com
This is a group devoted to making JRuby a first-class application language for Android.