Sawia - Find trending open source projects to contribute to
GitHub Repository Size - Browser extension to show file and repo size in GitHub
Trending Duck - Get data driven trends of top physical/ecom products, weekly
Refined GitHub - Browser extension that makes GitHub cleaner & more powerful
My Good First Issue - mygoodfirstissue helps you find open source projects with a codebase you are comfortable with.
Contributions for GitHub - Show your GitHub contributions graph on your iOS Devices