Acme is a project mainly written in RUBY and JAVASCRIPT, it's free.
An example of integration between third party apps and Tractis API
This is an example Rails app that illustrates how third party applications can integrate with Tractis API.
To run it using ruby just go to base dir and execute ./script/server
To build a war file you must have jruby (http://www.jruby.org/download) and warbler (http://kenai.com/projects/warbler/pages/Home) installed and run jruby -S warble war