GitHub Desktop - GitHub Desktop is a seamless way to contribute to projects on GitHub and GitHub Enterprise.
GITK - The GITK - Generalized Interface Tool Kit is a set of libraries, which form a (user) interface...
Git - Git is a free and open source version control system designed to handle everything from small to very large projects with speed and efficiency. It is easy to learn and lightweight with lighting fast performance that outclasses competitors.
Sublime Merge - Fast git client with integrated merge tool from the makers of Sublime Text
Mercurial SCM - Mercurial is a free, distributed source control management tool.
OctoDroid - Mobile GitHub client for Android.