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Modify Header Value (HTTP Headers) No Restart

Add, modify or remove a header for any request on desired domains.

Rated 5 out of 5 stars (2)
1,465 users

Selenium Builder

Create automated cross-browser functional tests easily and quickly.

Rated 5 out of 5 stars (1)
3,372 users

JavaScript-Image-Object Blocker No Restart

Blocks desired HTML contents (script, style, image, object, media)

Rated 5 out of 5 stars (2)
1,184 users

Tab Reloader (Page Reloader) No Restart

An easy-to-use tab reloader with custom reloading time settings for individual tabs

Rated 4 out of 5 stars (6)
2,372 users

Fontface Ninja No Restart

Explore fonts within a website, try and buy them !

Rated 5 out of 5 stars (2)
1,771 users

Access IranianUK in Iran

Bypasses the iranianuk.com filter in Iran.

Rated 5 out of 5 stars (1)
1,241 users

CryptoFox

CryptoFox is an encryption/decryption tool for Mozilla Firefox, with dictionary attack support for cracking MD5 passwords.

Rated 3 out of 5 stars (5)
1,513 users

Pencil Prototyping

Pencil is a Firefox add-on for GUI prototyping and simple sketching.

Rated 3 out of 5 stars (5)
3,114 users

WebRTC Control No Restart

Have control over WebRTC (disable or enable) and protect your IP address.

Rated 5 out of 5 stars (2)
3,791 users

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.

Rated 5 out of 5 stars (22)
3,472 users

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.

Rated 4 out of 5 stars (6)
1,829 users

CORS Everywhere

This is a firefox addon that allows the user to enable CORS everywhere by altering http responses.

Rated 4 out of 5 stars (7)
5,387 users

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.

Rated 5 out of 5 stars (3)
11,011 users

Scriptify No Restart

Create and manage add-ons made from Greasemonkey and Scriptish user scripts

Rated 3 out of 5 stars (26)
1,106 users

User-Agent Switcher No Restart Featured

Quickly and easily switch between popular user-agent strings.

Rated 4 out of 5 stars (25)
50,841 users

JSON-handle No Restart

JSON编辑器,It's a browser and editor for JSON document.You can get a beautiful view.
对JSON格式的内容进行浏览和编辑,以树形图样式展现JSON文档,并可实时编辑。

Rated 4 out of 5 stars (28)
13,116 users

Toggle JS No Restart

A simple toolbar button to quickly toggle javascript between enabled or disabled.
A green shield is shown when javascript is enabled and a red shield is shown when it is disabled

Rated 5 out of 5 stars (15)
6,832 users

JavaScript QR Code No Restart

Make QR Codes in pure JavaScript

Rated 5 out of 5 stars (1)
3,966 users

FireCaptor No Restart

Simple screenshot extension

Rated 5 out of 5 stars (13)
2,476 users

Remove cookies button No Restart

Remove all the cookies just by clicking a button on a toolbar! Simple as that!

Rated 4 out of 5 stars (7)
1,067 users