Create Issue Branch - Automates the creation of issue branches on GitHub
GitKraken - The intuitive, fast, and beautiful cross-platform Git client.
REVISR - Git Management for WordPress : keep track w/ version control
SourceTree - Mac and Windows client for Mercurial and Git.
StickyList - Your throwaway sticky note for your daily tasks. Digitized.
GitHub Desktop - GitHub Desktop is a seamless way to contribute to projects on GitHub and GitHub Enterprise.