For local development, I'm actually content with what I get from the Git command line interface: I use a slightly customized variant of `git log --oneline --graph`.

The problem is that I am often browsing the history of repositories hosted on Github via the Github web interface, along with other interactions such as searching through issues and PR history. Cloning a repo to my local machine and firing up gitk is a pretty inconvenient interruption of the web browsing experience.