As of server-less concepts, I only know http://peerjs.com/ http://peerjs.com/ which is based on WebRTC IIRC. The only server involved is typically a signaling s

As of server-less concepts, I only know http://peerjs.com/ http://peerjs.com/ which is based on WebRTC IIRC. The only server involved is typically a signaling server that does the pairing and is out of the game thereafter. All other conecpts I know (http://sharejs.org/ http://sharejs.org/ , http://www.mobwrite.net/ http://www.mobwrite.net/ and the likes) require a server. Great Demo.