Toggle between development environment url's
GitHub Privacy redacts commit and comment creation dates on GitHub. You can choose the level of redaction: only remove minutes and seconds from the dates or even hide day or month.
Open the current page or links in Polypane, the developer tool for responsive web development and design.
Service Worker Detector
This extension detects if a website registers a Service Worker.
Send pages and links to another browser using Choosy (macOS only).
The official Piral developer tools browser extension.
GitHub (Enterprise) Projects Plus
[Deprecated] Adds advanced labels management and other functionality to GitHub.