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.
Gitea - A painless self-hosted Git service
GitLab - Create, review and deploy code together with GitLab open source git repo management software | GitLab
Gitstack - GitStack is a free software that let you setup your own private Git server on Windows.
NotABug.org - Free open-source code hosting.
srchub - Srchub is an open source effort to bring new features and new ideas to the way you work on projects...