QuizVille This is a browser client written in Ruby/Sinatra. Demo: http://quizville.herokuapp.com Source: http://github.com/soe/quizville There is a server-side cometd server written in Node.js. As cometd is an evented protocol, Node is a more suitable language than Ruby. Demo: http://quizville-cometd.herokuapp.com Source: http://github.com/soe/quizville-cometd