Commit Together by Github - Now add co-authors to your commits
Tuple - Tuple is a Mac-only remote pair programming tool for discerning developers
Commit Print - Posters of your git history
USE Together - Collaborative screen sharing with multiple mouse cursors
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?
Gitmoji - An emoji guide for your GitHub commit messages