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User Agent Overrider No Restart

Override browser user agent string

Rated 4 out of 5 stars (55)
85,160 users

Cookie Exporter

Exports all cookies in IE manner.
Makes a Netscape standard cookies.txt file.
Very useful for WGET --load-cookies option.

Rated 5 out of 5 stars (13)
4,777 users

about:addons-memory 2016 No Restart

Adds a new page that shows add-on memory usage

Rated 5 out of 5 stars (19)
6,818 users

Flash Debugger No Restart

Debug Flash/SWF/Flex files on the web. Edit properties and inspect elements on the fly. View log output inside the extension. Run AS3 code against the active SWF. Access assets with the Explorer, profile memory consumption and much much more...

Not yet rated
1,755 users

Live HTTP Headers (Fixed By ITWorld.com.pk)

View HTTP headers of a page and while browsing.
Live HTTP Header Fix By Danyial ITs Working On Firefox Again Fixed Reply Problem

Rated 4 out of 5 stars (5)
2,201 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)
1,102 users

JavaScript Toggle On and Off No Restart

Toggle JavaScript engine on and off the easy way

Rated 5 out of 5 stars (3)
18,554 users

FillForms

FillForm is a small extension to help you fill page forms.
Fill out current web all forms with a keyboard shortcut(Alt + Q).

Rated 5 out of 5 stars (33)
3,003 users

Selenium IDE

Selenium IDE is an integrated development environment for Selenium tests. It is implemented as a Firefox extension, and allows you to record, edit, and debug tests.

Rated 5 out of 5 stars (9)
86,616 users

Emoji Cheatsheet No Restart

A reference for the codes to generate Emojis on popular sites like GitHub or Basecamp and Unicode characters for Twitter and Facebook.
Search Emojis by name or view recently selected items. Emojis are automatically copied to the clipboard.

Rated 4 out of 5 stars (22)
10,928 users

Selection Links

Fetches all links inside selection for opening or downloading

Rated 4 out of 5 stars (43)
4,510 users

Emoji Keyboard No Restart Featured

A free Emoji Keyboard extension of the web tool http://emojikeyboard.org. This extension lets you input emojis right on the Firefox web browser of your computer.

Rated 5 out of 5 stars (32)
15,130 users

JavaScript-Image-Object Blocker No Restart

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

Rated 5 out of 5 stars (2)
1,270 users

Fontface Ninja No Restart

Explore fonts within a website, try and buy them !

Rated 5 out of 5 stars (2)
1,878 users

Charles Proxy Auto-Configuration

Configures Mozilla Firefox for use with Charles Web Debugging Proxy.

Rated 4 out of 5 stars (10)
12,770 users

Custom UserAgent String No Restart

Add a custom useragent string for desired URLs or domains.

Rated 4 out of 5 stars (5)
4,025 users

DejaClick

Record, bookmark and replay your browser activities in a snap with DéjàClick. Designed for Firefox, DéjàClick can handle the most complex websites - including AJAX, Flash, forms and more. With a single click you can repeat your most common tasks.

Rated 4 out of 5 stars (48)
3,248 users

Panda Daily News & Inspiration No Restart

Keeping designers and hackers inspired every day.

The must have app for designers and hackers. Comfortably browse Hacker News, Designer News, Product Hunt, Dribbble, Behance and others all in one place. Never miss anything, again.

Rated 3 out of 5 stars (5)
1,299 users

HTTP Response Browser

Make HTTP requests from you browser and browse the response (HTTP headers and source).

Rated 4 out of 5 stars (1)
1,191 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)
11,844 users