GitHub Visualizer - Enter user/repo and see the project visually
GitHub Personal Website Generator - Generate a personal website based on GitHub contributions
Octohunt - Search to find developers in your city on Github.
Refined GitHub - Browser extension that makes GitHub cleaner & more powerful
SyntaxDB - Easily look up programming syntax for multiple languages
Beautify Github Profile - This repository helps you to have a more beautiful and attractive github profile, and you can access a set of tools and guides for beautifying your github profile.