Flume : A React-powered node editor and runtime engine. Build apps that are resilient to changing requirements by modeling your business logic as a JSON graph...
JS Bin : JS Bin is a tool for experimenting with web languages. In particular HTML, CSS and JavaScript, but JS Bin also supports other languages too (like Mark...
Teletype for Atom : Teletype for Atom lets developers share their workspace with team members and collaborate on code in real time.
Firepad : Firepad is an open-source, collaborative code and text editor. It is designed to be embedded inside larger web applications.
MobWrite converts forms and web applications into collaborative environments. Create a simple single-user system, add one line of JavaScript, and instantly get a collaborative system.