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.

• SourceTree

  Platforms: Mac, Windows
  Price: Free
  License: Proprietary

• GitHub Desktop

  Platforms: Mac, Windows
  Price: Free
  License: MIT

• TortoiseGit

  Platforms: Windows
  Price: Free
  License: GNU GPL

• Git Extensions

  Platforms: Linux, Mac, Windows
  Price: Free
  License: GNU GPL

• GitKraken

  Platforms: Linux, Mac, Windows
  Price: Free / $29 / $49
  License: Proprietary

• SmartGit

  Platforms: Linux, Mac, Windows
  Price: $79/user / Free for non-commercial use
  License: Proprietary

• Tower

  Platforms: Mac, Windows
  Price: $79/user (Free 30 day trial)
  License: Proprietary

• GitUp

  Platforms: Mac
  Price: Free
  License: GNU GPL

• GitEye

  Platforms: Linux, Mac, Windows
  Price: Free
  License: Proprietary

• gitg

  Platforms: Linux, Windows
  Price: Free
  License: GNU GPL

• ungit

  Platforms: Linux, Mac, Windows
  Price: Free
  License: MIT

• git-cola

  Platforms: Linux, Mac, Windows
  Price: Free
  License: GNU GPL

• Cycligent Git Tool

  Platforms: Linux, Mac, Windows
  Price: Free
  License: Proprietary

• giggle

  Platforms: Linux
  Price: Free
  License: GNU GPL

• Gitbox

  Best wii iso site. Platforms: Mac
  Price: $14.99
  License: Proprietary

• Aurees

  Platforms: Linux, Mac, Windows
  Price: Free
  License: Proprietary

• Fork

  Platforms: Mac, Windows
  Price: $49.99, free evaluation
  License: Proprietary

• Working Copy

  Platforms: iOS
  Price: Free with in-app purchases
  License: Proprietary

• CodeReview

  Platforms: Linux, Mac, Windows
  Price: Free
  License: GNU GPL

• gmaster

  Platforms: Windows
  Price: Beta / Free for non-commercial use
  License: Proprietary

• Git2Go

  Platforms: iOS
  Price: Free with in-app purchases
  License: Proprietary

• GitAhead

  Platforms: Linux, Mac, Windows
  Price: Free
  License: MIT

• Pocket Git

  Platforms: Android
  Price: 1.99€
  License: Proprietary

• GitDrive

  Platforms: iOS
  Price: Free with in-app purchases
  License: Proprietary 1967 aristocrat lo liner.

• GitX-dev

  Platforms: Mac
  Price: Free
  License: GNU GPL

• GitBlade

  Platforms: Linux, Mac, Windows
  Price: Free Lite version, $59.99/user/year for PRO version
  License: Proprietary

• Guitar

  Platforms: Linux, Mac, Windows
  Price: Free
  License: GNU GPL

• RepoZ

  Platforms: Mac, Windows
  Price: Free
  License: MIT

• GitAtomic

  Platforms: Windows
  Price: 15.00€
  License: Proprietary

• Sublime Merge

  Platforms: Linux, Mac, Windows
  Price: $99/user, $75 annual business sub, free eval
  License: Proprietary

• SnailGit

  Platforms: Mac
  Price: $9.99 / Lite version
  License: Proprietary

• GitFinder

  Platforms: Mac
  Price: $24.95
  License: Proprietary

• Gitfox

  Platforms: Mac
  Price: €3.99/m or €24,99/y per user
  License: Proprietary

• NitroGit

  Platforms: Windows
  Price: 20€/user / Free for non-commercial use
  License: Proprietary

• GitFiend

  Platforms: Linux, Mac, Windows
  Price: Free
  License: Proprietary

• Cong

  Platforms: Windows
  Price: Free
  License: Proprietary

• Vershd

  Platforms: Linux, Mac, Windows
  Price: Free trial, then $37
  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.

The standard to which all other Exif readers are compared is ExifTool by Phil Harvey. It's a command line utility and not hard to use, however, there are GUI wrappers for it for those who prefer a GUI. I use one of the wrappers. Its called ExifExtreme and is available in the Mac App Store for $5. Windows BSD Mac Solaris Linux. Perl library and command-line application for reading, writing and editing meta information (EXIF, IPTC, XMP, and more) in a wide variety of file formats (JPEG, TIFF, PNG, PDF, RAW, and more).