an etherpad like webapp, based on node.js and socket.io, for collaborative text editing. documents are saved as flatfiles in a git repository for versioning. the frontend uses a simple textarea, so it should work on mobile devices too.
you need node.js clone this repo, create a "pads" directory and in it create a git repo(not a bare!) fire up hub.js and point your browser to it.
RTFS for now :) it's not that much