Jenkins - Jenkins is an open-source continuous integration server with 300+ plugins to support all kinds of software development
GitKraken - The intuitive, fast, and beautiful cross-platform Git client.
CircleCI - CircleCI gives web developers powerful Continuous Integration and Deployment with easy setup and maintenance.
SourceTree - Mac and Windows client for Mercurial and Git.
Travis CI - Focus on writing code. Let Travis CI take care of running your tests and deploying your apps.
GitHub Desktop - GitHub Desktop is a seamless way to contribute to projects on GitHub and GitHub Enterprise.