- Any Firefox
- Firefox 56.0
- Firefox 55.0
- Firefox 44.0
- Firefox 43.0
- Firefox 26.0
- Firefox 17.0
- Firefox 16.0
- Firefox 11.0
- Firefox 4.0
87 matching results
Protects you against tracking through "free", centralized, content delivery. It prevents a lot of requests from reaching networks like Google Hosted Libraries, and serves local files to keep sites from breaking. Complements regular content blockers.
QuickJava Requires Restart Featured
PrefBar Requires Restart
JSON-DataView Requires Restart
Displays JSON data in a collapsible tree structure with syntax highlights.
NoScript Security Suite Requires Restart Featured
The best security you can get in a web browser!
Allow active content to run only from sites you trust, and protect yourself against XSS and Clickjacking attacks.
JS Print Setup Requires Restart
SettingSanity Requires Restart
uc Requires Restart
A userChromeJS clone with built-in subscript/overlay loader capability.
Web Developer Requires Restart
The Web Developer extension adds various web developer tools to the browser.
This add-on adds JS Fiddle style code prototyping to Firefox DevTools.
use UserScripts on your Firefox for Android with usi!
Ghostery Compatible with Firefox 57+ Featured
Increase your browsing privacy, protection, and speed.
InheritPrincipal Requires Restart
Execute JS Requires Restart
XUL Gear Requires Restart
IDE for FireFox plug-in developers and business analysts who create User Interface mock-ups. A WYSIWYG XUL editor
Karma Blocker Requires Restart
Block resources based on their karma.
PourBico Requires Restart
Speed up your testing and debugging times with PourBico. By intercepting HTTP requests, PourBico allows you to modify each response (headers and body) via inline edits or by replacing resources with local or external ones.