Themergency has a list of WordPress related projects to watch that are using GitHub as their source code repository instead of the traditional Subversion approach. In case you didn’t know it already, WordPress itself is also using GitHub except that it’s being synched every thirty minutes with the Subversion repository and only contains read-only access. Judging by the comments, a number of themes are also using GitHub as their repository. I wonder if this has translated into a more social experience in users contributing back to the original project which is supposedly one of the awesome benefits of using GitHub?
WordPress Projects To Follow On GitHub