GitExtensions vs GitHub Desktop

Instead of using HTTPS and authenticating every time they are pushing their code remotely, plenty of developers prefer to use SSH to communicate with the remote server and authenticate using secure key pairs.

It's totally free
And its written and thought by developers who really know what you need as a developer. Open to contributions by everybody.

GitExtensions typically displays all commands that it carries out in a separate window. The user can also open the Gitcommand log (under Tools) and view the git commands as they interact with the program.

GitExtensions is a lightweight and fast application.

Staging/unstaging files and/or lines of code, ammending, overriding commit's author, commit templates.

GitExtensions has a simple layout, all usual functions being available without navigation menus. The branching and merging are clear and easy to follow.

Complex git commands such as resolving a rebase conflict or performing a subtree merge are made much easier by a helpful UI.

Can either be set up as a shell extension, standalone tool of Visual Studio plugin, allowing developers to choose the way that suits their workflow best and is easier for them to get into.

Can be used as a Visual Studio plugin for developers who use it as their IDE, or as a standalone tool. Both are easy to use even for users not very familiar with git.

Easy to save, view & pop stashes.

Powerful submodule support, also when working with multiple cloned SuperRepos.

There are several out-of-the-box plugins installed with standard setup. Additional behavior customization is possible with new plugins (written in C#).

This makes running custom git commands quicker.

Includes Gitflow, also has a delete obsolete branches feature which is very useful to get rid of those old branches that have already been merged. There are also other options to clean overall clutter in repositories.

The settings window on first run helps you set lots of required settings such as your commit email address.

Makes working with repos using different languages and support tools much easier.

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).

This is the official GitHub desktop client built by the GitHub team.

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.