SourceForge - The Complete Open-Source and Business Software Platform.
Commit Together by Github - Now add co-authors to your commits
openDesktop.org - The website openDesktop.
Commit Print - Posters of your git history
OSOR - OSOR is the Open Source Observatory, a project to provide a framework for developing and executing autonomous observations.
gitbird - So, I don't always remember to tweet what I do, but commit my code often, and what do users love more than your product?