ServeurPR is a project mainly written in ..., it's free.
Server side of PongRoulette --- Powered by Python(Twisted framework, Websocket experimental branch)
PongRoulette® dusts off the famous game Pong thanks to the power of new web technologies. It is a modest technological demonstration of what we can do with HTML5/JavaScript, WebSocket protocol and Python's Twisted server.
Enjoy and don't hesitate to reuse some parts of this code!