GitHub - Originally founded as a project to simplify sharing code, GitHub has grown into an application used by over a million people to store over two million code repositories, making GitHub the largest code host in the world.
SourceTree - Mac and Windows client for Mercurial and Git.
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.
BitBucket - Bitbucket is a free code hosting site for Mercurial and Git. Manage your development with a hosted wiki, issue tracker and source code.
SourceForge - The Complete Open-Source and Business Software Platform.