GitHub Action that in a pull request updates the copyright year(s) in your license file.

The minimal amount of CSS to replicate the GitHub Markdown style

Browser extension that simplifies the GitHub interface and adds useful features

Which GitHub page are you on? Is it an issue? Is it a list? Perfect for your WebExtension or userscript.

Browser extension to add git graph to GitHub website.

Displays test results from popular testing frameworks directly in GitHub

.NET test logger that reports to GitHub Actions