Gitea - A painless self-hosted Git service
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.
GitBucket - GitBucket is the easily installable open-source GitHub clone written with Scala.
Gerrit Code Review - OpenSource Git Code Review Tool
Bonobo Git Server - Set up your own self hosted git server on IIS for Windows.
Phabricator - Phacility - Phabricator