Modify Header Value (HTTP Headers) No Restart
Add, modify or remove a header for any request on desired domains.
Create automated cross-browser functional tests easily and quickly.
Blocks desired HTML contents (script, style, image, object, media)
Tab Reloader (Page Reloader) No Restart
An easy-to-use tab reloader with custom reloading time settings for individual tabs
Fontface Ninja No Restart
Explore fonts within a website, try and buy them !
Bypasses the iranianuk.com filter in Iran.
CryptoFox is an encryption/decryption tool for Mozilla Firefox, with dictionary attack support for cracking MD5 passwords.
Pencil is a Firefox add-on for GUI prototyping and simple sketching.
WebRTC Control No Restart
Have control over WebRTC (disable or enable) and protect your IP address.
Kuai-Translator No Restart
"Kuai-Translator"-instant translation extended (A simple translator add-on), is a convenient extended to support translation of multiple languages, translation of words can also be a WIKI query.
Canvas Defender No Restart
Instead of completely blocking canvas fingerprinting, Canvas Defender add-on creates a unique and persistent noise that hides your real canvas fingerprint. This add-on protects you while browsing both in normal and private mode.
This is a firefox addon that allows the user to enable CORS everywhere by altering http responses.
React Developer Tools No Restart
React Developer Tools is a tool that allows you to inspect a React tree, including the component hierarchy, props, state, and more. To get started, just open the Firefox devtools and switch to the React tab.
Scriptify No Restart
Create and manage add-ons made from Greasemonkey and Scriptish user scripts
User-Agent Switcher No Restart Featured
Quickly and easily switch between popular user-agent strings.
JSON-handle No Restart
JSON编辑器,It's a browser and editor for JSON document.You can get a beautiful view.
Toggle JS No Restart
FireCaptor No Restart
Simple screenshot extension