SourceTree - Mac and Windows client for Mercurial and Git.
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.
Travis CI - Focus on writing code. Let Travis CI take care of running your tests and deploying your apps.
GitLab - Create, review and deploy code together with GitLab open source git repo management software | GitLab
Codeship - Codeship is a fast and secure hosted Continuous Delivery platform that scales with your needs.