Service Worker Detector
This extension detects if a website registers a Service Worker.
The official Piral developer tools browser extension.
GitHub (Enterprise) Projects Plus
[Deprecated] Adds advanced labels management and other functionality to GitHub.
Hitsteps Visitor Manager
Get your website analytics insight and get notified about updates and live support requests in your dashboard
Novibyte Issues Plugin
Jira Issues Management
Pin for GitHub
Pin repositories on GitHub for later without having to star them