What are some alternatives?
When comparing Gitql and GitHub Desktop, you can also consider the following products
GitStats - A local GitHub-like contributions calendar
SmartGit - SmartGit is a front-end for the distributed version control system Git and runs on Windows, Mac OS...
GVfs - Git Virtual File System (by Microsoft)
GitKraken - The intuitive, fast, and beautiful cross-platform Git client.
Working Copy - The powerful Git client for iOS
SourceTree - Mac and Windows client for Mercurial and Git.