[werg]

Stypi is a more mature project with more features. Also they use the ACE-editor which arguable is more feature-rich (though poorer in documentation IMHO).

My project is open source: https://github.com/werg/snucode So it's also an example use of the Node.js websockets framework SocketStream.

Furthermore I do operational transformation a bit differently (presumably, not sure how they do it): http://gpickard.wordpress.com/2012/02/17/my-approach-to-oper...