http://sourceforge.net/awards/cca/
Development - Winner
Gaim
A feature-rich GTK+ instant messaging application that supports multiple protocols, including AIM, ICQ, Yahoo!, MSN, Jabber, IRC, Napster, and more
First Runner-Up
XOOPS
A dynamic Web content management system written in PHP for the MySQL database
Second Runner-Up
PHP For Applications / PHP Framework
A PHP RAD and object oriented PHP framework for building event-driven stateful Web applications