GUI Clients
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
GitHub Desktop
Platforms: Mac, Windows
Price: Free
License: MITSourceTree
Platforms: Mac, Windows
Price: Free
License: ProprietaryTortoiseGit
Platforms: Windows
Price: Free
License: GNU GPLGit Extensions
Platforms: Linux, Mac, Windows
Price: Free
License: GNU GPLGitKraken
Platforms: Linux, Mac, Windows
Price: Free / $29 / $49
License: ProprietaryMagit
Platforms: Linux, Mac, Windows
Price: Free
License: GNU GPLSmartGit
Platforms: Linux, Mac, Windows
Price: $79/user / Free for non-commercial use
License: ProprietaryTower
Platforms: Mac, Windows
Price: $69/user [Free 30 day trial]
License: ProprietaryMeGit [based on EGit]
Platforms: Linux, Mac, Windows
Price: Free
License: EPL2.0Sublime Merge
Platforms: Linux, Mac, Windows
Price: $99/user, $75 annual business sub, free eval
License: ProprietaryGitUp
Platforms: Mac
Price: Free
License: GNU GPLFork
Platforms: Mac, Windows
Price: $49.99, free evaluation
License: ProprietaryGitAhead
Platforms: Linux, Mac, Windows
Price: Free
License: MITgitg
Platforms: Linux, Windows
Price: Free
License: GNU GPLungit
Platforms: Linux, Mac, Windows
Price: Free
License: MITFugitive
Platforms: Linux, Mac, Windows
Price: Free
License: VimGitEye
Platforms: Linux, Mac, Windows
Price: Free
License: ProprietaryLazyGit
Platforms: Linux, Mac, Windows
Price: Free
License: MITgmaster
Platforms: Windows
Price: Beta / Free for non-commercial use
License: ProprietaryGuitar
Platforms: Linux, Mac, Windows
Price: Free
License: GNU GPLPocket Git
Platforms: Android
Price: 1.99
License: ProprietaryWorking Copy
Platforms: iOS
Price: Free with in-app purchases
License: ProprietaryGitfox
Platforms: Mac
Price: 39,99/year or 79,99 once
License: Proprietarygit-cola
Platforms: Linux, Mac, Windows
Price: Free
License: GNU GPLCycligent Git Tool
Platforms: Linux, Mac, Windows
Price: Free
License: ProprietaryGitUI
Platforms: Linux, Mac, Windows
Price: Free, but donations welcome
License: MITgiggle
Platforms: Linux
Price: Free
License: GNU GPLAurees
Platforms: Linux, Mac, Windows
Price: Free
License: ProprietaryGitbox
Platforms: Mac
Price: $14.99
License: ProprietaryCodeReview
Platforms: Linux, Mac, Windows
Price: Free
License: GNU GPLGit2Go
Platforms: iOS
Price: Free with in-app purchases
License: ProprietarySnailGit
Platforms: Mac
Price: $9.99 / Lite version
License: ProprietaryGitX-dev
Platforms: Mac
Price: Free
License: GNU GPLGitBlade
Platforms: Linux, Mac, Windows
Price: Free Lite version, $59.99/user/year for PRO version
License: ProprietaryRepoZ
Platforms: Mac, Windows
Price: Free
License: MITCong
Platforms: Windows
Price: Free
License: ProprietaryGitDrive
Platforms: iOS
Price: Free with in-app purchases
License: ProprietaryGitFiend
Platforms: Linux, Mac, Windows
Price: Free
License: ProprietaryGitAtomic
Platforms: Windows
Price: 15.00
License: ProprietaryNitroGit
Platforms: Windows
Price: 20/user / Free for non-commercial use
License: ProprietaryGitFinder
Platforms: Mac
Price: $24.95
License: ProprietaryVershd
Platforms: Linux, Mac, Windows
Price: Free for personal use, otherwise $37
License: ProprietaryGitVine
Platforms: Linux, Mac, Windows
Price: Free
License: ProprietaryPolyGit
Platforms: iOS
Price: Free with in-app purchases
License: Proprietary
There are other great GUI tools available as well. Have a look at the list of interfaces, frontends and tools in the Git Wiki.