Project Lightspeed - a sub-second, open source, self hosted stream from OBS
Commit Together by Github - Now add co-authors to your commits
Repostimeline - Repostimeline is an open-sourced web app that lets you generate a stunning timeline of your GitHub public projects.
Commit Print - Posters of your git history
PlanAR - Measure things and spaces with your mobile device.
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?