Gitea - A painless self-hosted Git service
Bonobo Git Server - Set up your own self hosted git server on IIS for Windows.
GitKraken - The intuitive, fast, and beautiful cross-platform Git client.
GitBucket - GitBucket is the easily installable open-source GitHub clone written with Scala.
Code-Review - The aim of CodeReview is to provide tools for code review tasks on local Git repositories.
GitPrep - GitPrep is a Github clone.