Meat!

Get the most powerful and easy-to-configure continuous integration and delivery platform.

GitBucket

GitBucket is the easily installable open-source GitHub clone written with Scala.

The on-premises version of GitHub, which you can deploy and manage in your own, secure environment

Create, review and deploy code together with GitLab open source git repo management software | GitLab

Pure Java Git solution for managing, viewing, and serving Git repositories

A painless self-hosted Git service

Phacility - Phabricator

Enterprise source code management platform for behind-the-firewall Mercurial, Git & Subversion. Secure and Open Source.