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.
Atlassian Crucible - Collaborative peer code review tool.
Atlassian Bitbucket Server - Atlassian Bitbucket Server is a scalable collaborative Git solution.
Phabricator - Phacility - Phabricator
Mercurial SCM - Mercurial is a free, distributed source control management tool.
Gerrit Code Review - OpenSource Git Code Review Tool