Unfuddle - Unfuddle is a secure, hosted project management solution for software development teams.
openDesktop.org - The website openDesktop.
Backlog - A cloud-based project management app for developers and their teams.
OSOR - OSOR is the Open Source Observatory, a project to provide a framework for developing and executing autonomous observations.
TaskBlast - Versatile and easy to use Project Management tool to get all team members involved.
SourceForge - The Complete Open-Source and Business Software Platform.