When comparing Git Extensions vs GitFiend, 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 GitFiend is ranked 27th. The most important reason people chose Git Extensions is:
Developer focused and powerful options
Specs
Ranked in these QuestionsQuestion Ranking
Pros
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...
Pro Cross platform
It has native Linux, Windows and Mac clients.
Pro Free
As of version 0.38.2 there is no paid features or license.
Cons
Con Requires mono
Con Poor UI
Rich developer experience but awful interface.
Con Few plugins
A small selection of plugins.
Con Limited features
As it is in a new application in development it has a limited feature set if you are a power user.
Con Not open-source
Developer has shared the UI components to GitHub but not the source code of the application.
