Adium

Project Ideas
Preferred license: GNU General Public License (GPL)
Adium is a free instant messaging application for Mac OS X that can connect to AIM, MSN, Jabber, Yahoo, and more.
Actual source code produced by the student participants in Google Summer of Code™ for Adium can be found here.
 
Current Projects
by Erik Beerepoot, mentored by David Smith
by Andre Cohen, mentored by Brian Eric Ganninger
by Matthew Joseph Handley, mentored by Peter Hosey
by Andreas Monitzer, mentored by Robert August Fackler
by Erich Kreutzer, mentored by Andrew Wellington