User Agent Overrider No Restart
Override browser user agent string
Exports all cookies in IE manner.
Makes a Netscape standard cookies.txt file.
Very useful for WGET --load-cookies option.
about:addons-memory 2016 No Restart
Adds a new page that shows add-on memory usage
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...
View HTTP headers of a page and while browsing.
Live HTTP Header Fix By Danyial ITs Working On Firefox Again Fixed Reply Problem
Remove cookies button No Restart
Remove all the cookies just by clicking a button on a toolbar! Simple as that!
FillForm is a small extension to help you fill page forms.
Fill out current web all forms with a keyboard shortcut(Alt + Q).
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.
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.
Fetches all links inside selection for opening or downloading
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.
Blocks desired HTML contents (script, style, image, object, media)
Fontface Ninja No Restart
Explore fonts within a website, try and buy them !
Configures Mozilla Firefox for use with Charles Web Debugging Proxy.
Custom UserAgent String No Restart
Add a custom useragent string for desired URLs or domains.
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.
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.
Make HTTP requests from you browser and browse the response (HTTP headers and source).
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.