Contributions for GitHub - Show your GitHub contributions graph on your iOS Devices
Octohunt - Search to find developers in your city on Github.
GitHub Visualizer - Enter user/repo and see the project visually
CodeFlower - CodeFlower visualizes source code repositories using an interactive tree.
GitHub Gardener - Daily, automated commits that turn your GitHub green
GitHub Wrapped - You coded a lot in 2021 - commits, pull requests, and reviews.