Tynker - Game Worlds for Kids to Learn Programming
GitKraken - The intuitive, fast, and beautiful cross-platform Git client.
CodeCombat - Learn programming with a multiplayer live coding strategy game.
SourceTree - Mac and Windows client for Mercurial and Git.
StackHive - Design, develop or publish websites right from your browser
GitHub Desktop - GitHub Desktop is a seamless way to contribute to projects on GitHub and GitHub Enterprise.