128-starling-and-workling is a project mainly written in RUBY and JAVASCRIPT, it's free.
Railscasts Episode #128: Starling and Workling
http://railscasts.com/episodes/128
Commands:
gem install starling script/plugin install http://svn.playtype.net/plugins/workling/ starling -d -P tmp/pids/starling.pid -q log/ script/workling_starling_client start