Gitblit is an open-source, pure Java stack for managing, viewing, and serving Git repositories.
GitLab is a github like ruby webserver. It allow you to manage Git projects. It provide issue tracking, wiki, "project wall", snippet, and user profile.
GitBucket is the easily installable open-source Github clone written with Scala. It's provide Github like UI and features such as Git repository hosting via HTTP and SSH, repository viewer, issues, wiki...
GitPrep is Github clone. you can install portable github system into unix/linux. You can create users and repositories without limitation. This is free software.
The easiest way to share and manage your Git, Mercurial and Subversion repositories over http. - Very easy installation - No need to hack configuration files, SCM-Manager is completely configurable...
The first Git web viewer that Just Works™.
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