Commit Together by Github - Now add co-authors to your commits
Duotones - Instant duotone effects in your browser
Commit Print - Posters of your git history
Photo + Music = Video - Photo + Music = Video (also known as Video Slideshow Editor) developed by Manas Hive.
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?
The Memory Wave - Create posters of the most significant sounds from your life