When comparing TortoiseGit vs Git Extensions, the Slant community recommends Git Extensions for most people. In the question“What are the best visual git GUIs?” Git Extensions is ranked 5th while TortoiseGit is ranked 11th. The most important reason people chose Git Extensions is:
Developer focused and powerful options
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Open source
Licensed under GPL.
Pro Windows context menu integration
Context menu enables access to common commands quickly.
Pro Can parse and provide a pretty log of all commits or filter by branch
Pro Convinient blaming tool
Very friendly blame tool. Easy to walk in the history of a file.
Pro Comprehensive interface
Developer focused and powerful options
Pro No registration at all
Doesn't require registration to use.

Pro Free/libre
This application is FOSS, and thus it can be freely modified & distributed.

Pro Plugins
It comes with many plugins and you can build your own. Included by default are some very neat visualization tools for Repository metrics.
Pro Easy to add add action in the GUI
Right click to add a script to delete remote branch or tag...
Cons
Con Windows only
No Linux or OSX versions available.
Con Renames git commands
Makes things hard to find for people used to the git CLI.
Con Buggy file status icons
The file icons are also often buggy and do not reflect its true status. Often times the icon is missing and makes you think a file or folder is untracked, when it is already staged, or sometimes even already committed and pushed.
Con May clutter your Windows Explorer
If you have synced your dev folder to a cloud service, TortoiseGit's git status file icons will override your cloud provider's icons.
Con No support for staging
It does not support staging in any way. You'll never guess that this feature is exist in git.
Con Requires mono
Con Poor UI
Rich developer experience but awful interface.
Con Few plugins
A small selection of plugins.
