Gitstalk - Discover what your favorite GitHub users are up to
massCode - A free and open source code snippets manager for developers.
Refined GitHub - Browser extension that makes GitHub cleaner & more powerful
GitHub Gist - Gist is a simple way to share snippets and pastes with others.
Dyllo - A clean and simple way to view a Github user's information
CodeMyUI - Handpicked code snippets you can use in your web projects