Ansible - Radically simple configuration-management, application deployment, task-execution, and multi-node orchestration engine
GitKraken - The intuitive, fast, and beautiful cross-platform Git client.
Jenkins - Jenkins is an open-source continuous integration server with 300+ plugins to support all kinds of software development
SourceTree - Mac and Windows client for Mercurial and Git.
Puppet Enterprise - Get started with Puppet Enterprise, or upgrade or expand.
GitHub Desktop - GitHub Desktop is a seamless way to contribute to projects on GitHub and GitHub Enterprise.