Gitea - A painless self-hosted Git service
Gitstack - GitStack is a free software that let you setup your own private Git server on Windows.
GitKraken - The intuitive, fast, and beautiful cross-platform Git client.
GitLab - Create, review and deploy code together with GitLab open source git repo management software | GitLab
Code-Review - The aim of CodeReview is to provide tools for code review tasks on local Git repositories.
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.