Poutre is a project mainly written in RUBY and R, it's free.
Throw a lumber in your server
Poutre, lumber in english is a bench tool without XML. It use ruby event machine.
Be careful, the paint is still fresh.
Use ruby 1.9.2 and bundle to test it.
rvm use 1.9.2
bundle update
bundle exec ./bin/poutre http://www.monsite.persoGPL.