On GitHub, no matter what kind of file is, their icons are all same. However, in your fancy editor, there are some packages which make it energetic.
Therefore, I build a simple extension to replace original file icon with file-specific icons. This improves visual recognition on GitHub.
Gitstalk is a Web app that allows you to sneak peek into the recent activities of other GitHub users. No Login, No BS. Just enter the username and you are good to fly!
Brigitte is an app that lets you get your Github notifications on your phone within seconds.