Git becomes a very popular version control system.
In the same time windows users looking for visual clients to work with.
One of such tool is Git Extensions:
"Git Extensions is a toolkit to make working with Git on Windows more intuitive. The shell extension will intergrate in Windows Explorer and presents a context menu on files and directories. There is also a Visual Studio plugin to use git from Visual Studio. Sourcecode: http://github.com/spdr870/gitextensions/tree/master"