Cljs-chat is a project mainly written in JavaScript, it's free.
An example chat application using ExtJS4, ring-cometd2-adapter, clj-amqp, and clojurescript
An example chat application using ExtJS 4, clojurescript, cometd2, and clj-amqp.
FIXME: write
Copyright (C) 2011 Matt Hoyt
Distributed under the Eclipse Public License, the same as Clojure.
For the cljs part it distributed under GPLv3 if you don't have a commerical license for ExtJS otherwise its distrubted under Eclipse Public License if you have a commerical license.