Git - GUI Clients

The entire Pro Git book written by Scott Chacon and Ben Straub is available to read online for free. Dead tree versions are available on Amazon.com.
Git comes with built-in GUI tools for committing (git-gui) and browsing (gitk), but there are several third-party tools for users looking for platform-specific experience.
If you want to add another GUI tool to this list, just follow the instructions.
All Windows Mac Linux Android iOS
Platforms: Mac, Windows Price: Free License: MIT
Platforms: Mac, Windows Price: Free License: Proprietary
Platforms: Linux, Mac, Windows Price: Free / $48+/user annually License: Proprietary
Platforms: Windows Price: Free License: GNU GPL
Platforms: Linux, Mac, Windows Price: Free License: GNU GPL
Platforms: Windows Price: Free License: GNU GPL
Platforms: Linux, Mac, Windows Price: Free for non-commercial use / $59/user annually License: Proprietary
Platforms: Mac, Windows Price: $69+/user annually (Free 30-day trial) License: Proprietary
Platforms: Linux, Mac, Windows Price: Free License: EPL2.0
Platforms: Linux, Mac, Windows Price: $99/user / $75/user annually (Free evaluation) License: Proprietary
Platforms: Mac Price: Free License: GNU GPL
Platforms: Mac, Windows Price: $59.99 (Free evaluation) License: Proprietary
Platforms: Linux, Mac, Windows Price: Free / $35/user annually License: Proprietary
Platforms: Linux, Windows Price: Free License: GNU GPL
Platforms: Linux, Mac, Windows Price: Free License: MIT
Platforms: Linux, Mac, Windows Price: Free License: Vim
Platforms: Linux, Mac, Windows Price: Free License: MIT
Platforms: Linux, Mac, Windows Price: Free License: MIT
Platforms: Linux, Mac, Windows Price: Free License: GPL-2.0
Platforms: Linux, Mac, Windows Price: Free License: GNU GPL
Platforms: Linux, Mac, Windows Price: Free License: FSL-1.1-MIT
Platforms: Mac, Windows Price: Free / 20€ License: Proprietary
Platforms: iOS Price: Free / $19.99 License: Proprietary
Platforms: Mac Price: $59/user annually (Free 30-day trial) License: Proprietary
Platforms: Linux, Mac, Windows Price: Free License: GNU GPL
Platforms: Linux, Mac, Windows Price: Free, but donations welcome License: MIT
Platforms: Linux, Mac, Windows Price: Free License: Proprietary
Platforms: Linux, Windows Price: Free License: GPLv2 or later
Platforms: Linux, Mac, Windows Price: Free License: Proprietary
Platforms: Mac Price: Free (limited) / $9.99 License: Proprietary
Platforms: Mac, Windows Price: Free License: MIT
Platforms: Linux, Mac, Windows Price: Free License: Proprietary
Platforms: Windows Price: Free for non-commercial use / 20€/user License: Proprietary
Platforms: Mac Price: Free (limited) / $29.95 (Free 30-day trial) License: Proprietary
Platforms: Linux, Mac, Windows Price: Free License: Proprietary
Platforms: iOS Price: Free (limited) / $11.99/year / $39.99 License: Proprietary