XMPP over Websockets is implemented in various servers: - Prosody (http://code.google.com/p/prosody-modules/wiki/mod_websocket) - openfire (http://code.goo

XMPP over Websockets is implemented in various servers: - Prosody (http://code.google.com/p/prosody-modules/wiki/mod_websocket) - openfire (http://code.google.com/p/openfire-websockets/) - Tigase (built-in as far as I could see) - Ejabberd in the Commercial version, the opensource version doesn't really have one yet. Regarding Jingle over WebRTC: Various people are working on it (or have been, in my case) and it's getting closer to workable. What I encountered, when I tried ~a year ago to do it, was that not all SDP messages could be easily transformed into the Jingle format. Might have been changed now though as the WebRTC Specs have changed quite a bit.