Codassium : A better way to conduct remote interviews
WebRTC based video chat + code editor = Awesome interviews
google-mobwrite : MobWrite converts forms and web applications into collaborative environments. Create a simple single-user system, add one line of JavaScript, and inst...
Firepad : Firepad is an open-source, collaborative code and text editor. It is designed to be embedded inside larger web applications.
SumoPaint : Powerful graphics editor for your web browser and pc
Etherpad is an Open Source online editor providing collaborative editing in really real-time powered by Node.js