What are some alternatives?
When comparing pre-commit and GitKraken, 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...
Git-Repo - Manage Gitlab, GitHub and Bitbucket from the command line
SourceTree - Mac and Windows client for Mercurial and Git.
TortoiseGit - TortoiseGit is an easy to use client for the Git distributed revision control system.
GitHub Desktop - GitHub Desktop is a seamless way to contribute to projects on GitHub and GitHub Enterprise.