Firepad : Firepad is an open-source, collaborative code and text editor. It is designed to be embedded inside larger web applications.
Slate : Slate is a completely customizable framework for building rich text editors.
Slate lets you build rich, intuitive editors like those in Medium, Dropbo...
Conclave : Conclave is a peer-to-peer, real-time, collaborative text editor built from scratch in JavaScript. Intrigued by collaborative text editors such as Goo...
NicEdit : WYSIWYG Content Editor, Inline Rich Text Application
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.