Web Developer
The Web Developer extension adds various web developer tools to the browser.
62,335 users
Flagfox
Displays a country flag depicting the location of the current website's server and provides a multitude of tools such as site safety checks, whois, translation, similar sites, validation, URL shortening, and more...
92,123 users
Greasemonkey
Customize the way a web page displays or behaves, by using small bits of JavaScript.
162,715 users
