GitHub Desktop - GitHub Desktop is a seamless way to contribute to projects on GitHub and GitHub Enterprise.
SourceForge - The Complete Open-Source and Business Software Platform.
Git - Git is a free and open source version control system designed to handle everything from small to very large projects with speed and efficiency. It is easy to learn and lightweight with lighting fast performance that outclasses competitors.
openDesktop.org - The website openDesktop.
Mercurial SCM - Mercurial is a free, distributed source control management tool.
OSOR - OSOR is the Open Source Observatory, a project to provide a framework for developing and executing autonomous observations.