Sublime Merge - Fast git client with integrated merge tool from the makers of Sublime Text
Shrink for Github - A macOS app for your Github issues
GITK - The GITK - Generalized Interface Tool Kit is a set of libraries, which form a (user) interface...
GitHub Reader - A quick way to browse GitHub issues and pull requests.
Bit - Easily share reusable components between projects and applications to build faster as a team.
Codetree - You can manage your entire development process through GitHub.