GitKraken is a popular leading graphic user interface for Git which was built using NodeGit.
To download and use GitKraken you're going to need Ubuntu 12.04 or later. Assuming you require a Debian based distribution, follow these simple steps.
To get started, open your terminal with:
Ctrl+Alt+T
Then run the following commands one line after the other:
wget https://release.gitkraken.com/linux/gitkraken-amd64.deb dpkg -i gitkraken-amd64.deb
After following these steps you should be able to get GitKraken running as no tools are required. You won't even need to download Git as GitKraken works without dependencies.
Related: What is GitKraken ?