GreenThumb is a Java Jabber client applet. It
supports SSL, group chatting, and much more.
GT3 supports avatars and is well suited for community deployment or as a direct chat client.
You can change the style and look of it entirely.
Information regarding Project Releases and Project Resources. Note that the information here is a quote from Freecode.com page, and the downloads themselves may not be hosted on OSDN.