Jixee - </Build Awesome Software> Jixee is a task and communication hub that simplifies your dev team’s workflow.
SourceForge - The Complete Open-Source and Business Software Platform.
Trac - Trac is a project management and bug/issue tracking system. Provides an interface to Subversion and an integrated wiki.
openDesktop.org - The website openDesktop.
Mantis Bug Tracker - Mantis Bug Tracker is a free and open source, web-based bug tracking system.
OSOR - OSOR is the Open Source Observatory, a project to provide a framework for developing and executing autonomous observations.