Ruby on Rails is moving to Git and GitHub. Super cool.
I particularly like the comment from AkitaOnRails:
Right now, everybody is playing catch-up with Git, Git-svn and Github, no question about that.
Most of the projects that formerly lived in Rails’ SVN repository have already made the switch to GitHub: Prototype, Scriptaculous, and Capistrano.
And let’s not forget the awesome, high profile projects already using GitHub: Merb, RSpec, DataMapper, and of course Nu and Io. Can’t wait to see who joins next!
Update: Fixed Prototype link. Whoops!