git-gui

GitUp is a bet to invent a new Git interaction model that lets engineers of all levels work quickly, safely, and without headaches. It's unlike any other Git client out there from the way it’s built (it interacts directly with the Git database on disk), to the way it works...

TortoiseGit is a Windows Shell Interface to Git and based on TortoiseSVN. It's open source and can fully be build with freely available software.

Cornerstone is a version control app built on Subversion that makes serious version control easier than ever. With full support for all of Subversion's rich features, it's both incredibly powerful and super-easy to use.