GitUp

GitUp download

GitUp lets you see your entire labyrinth of branches and merges.
Download from the developer's website

Alternative apps

Xamarin Studio
6.3.0.864
FREE
Build apps for iOS, Android and Mac.
Tower
5.1
Powerful Git client for OS X that makes using Git easy and more efficient.
git-annex
0.0.1
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Manage large files with git.
Gitifier
1.3.1
FREE
Application that runs in your MacOSX menu bar.
gitbar
1.2.3
Reminds you of any uncommitted repository during the day when you forget it.