When comparing GitHub Desktop 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 2nd while GitHub Desktop is ranked 12th.
Ranked in these QuestionsQuestion Ranking
Pro Simple, streamlined GUI
GitHub Desktop uses an extremely simplistic two-panel view. It's not capable of complex historical visualisations like other GUIs, but it is very easy to use (especially for git novices).
Pro Great GitHub integration
This is the official GitHub desktop client built by the GitHub team.
Pro Supports pull requests
In addition to being able to seamlessly and easily integrate with all of GitHub's features, it also supports forking and submitting pull requests on any open source project hosted on GitHub.
Pro Comprehensive interface
This application is FOSS, and thus it can be freely modified & distributed.
Pro No registration at all
Doesn't require registration to use.
Pro Easy to add add action in the GUI
Right click to add a script to delete remote branch or tag...
It comes with many plugins and you can build your own. Included by default are some very neat visualization tools for Repository metrics.
Can't handle complex tasks. The Help Manual advises to use command-line Git instead.
Poster child for authors' programming ideology (FRP), likely the cause for the odd quirks and bugs it has.
Con Not free/libre
This application is proprietary, and thus cannot be modified or freely distributed.
Con No Linux support
There's no Linux version of this client.
Con Non-GitHub repositories are not fully supported
Since this is mainly a GitHub client, other repositories are not fully supported and with as many features and setting up a repo hosted anywhere else but GitHub is troublesome.
Con Does not support multiple Remotes for a repo
Only allowed to assign one URL as remote. To manage/sync/fetch other remotes, use command-line Git instead.
Con Requires mono
Con Poor UI
Rich developer experience but awful interface.
Con Few plugins
A small selection of plugins.