GitLab - Create, review and deploy code together with GitLab open source git repo management software | GitLab
GitKraken - The intuitive, fast, and beautiful cross-platform Git client.
Redmine - Flexible project management web application
SourceTree - Mac and Windows client for Mercurial and Git.
Bugfender - Cloud logging for your apps, not only crashes matter
GitHub Desktop - GitHub Desktop is a seamless way to contribute to projects on GitHub and GitHub Enterprise.