Freshmeat page: http://freshmeat.net/projects/gaim/
Gaim is an Instant Messenging client using the GTK+ widget set. It supports both TOC and Oscar, as well as quite a few other "instant messenging" systems (ICQ, Yahoo, Jabber, MSN, etc) through the use of plugins. The interface is similar to the official AIM client, but without all those annoying ads. ;-)
This project has the following developers:
New HTML Parser: The long-awaited libxml2 based HTML parser code is live. It needs further work but already handles most markup better than the original parser.
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If you're a C programmer with some spare time, take a look at the mod_virgule project page and help us with one of the tasks on the ToDo list!