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User-Agent Switcher (revived) Compatible with Firefox 57+

Quickly and easily switch between popular user-agent strings.

Rated 4 out of 5 stars (15)
7,523 users

signTextJS plus

window.crypto.signText replacement plus enhancements

Rated 4 out of 5 stars (24)
46,828 users

Hackbar. Requires Restart

修改了浮夸的界面,爱护眼睛才是第一.感谢r0oth3x49升级!By Darkmelody.

Rated 3 out of 5 stars (2)
3,082 users

FlashFirebug Requires Restart

Debug Flash/SWF 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. (NOW SUCCEEDED BY FLASH DEBUGGER. CHECK ADDON DESCRIPTION)

Rated 4 out of 5 stars (5)
16,253 users

Zoom for Firefox Compatible with Firefox 57+

Zoom in or out on web content using the zoom button for more comfortable reading.

Rated 4 out of 5 stars (6)
1,168 users

Emoji Cheatsheet Compatible with Firefox 57+ Featured

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 (47)
42,540 users

Live HTTP Headers (clone)

View HTTP headers of a page and while browsing.

This is an unofficial "Live HTTP headers" clone, mainly to fix the Replay feature!

Rated 4 out of 5 stars (10)
7,771 users

Redux DevTools Compatible with Firefox 57+

DevTools for Redux with actions history, undo and replay.

Rated 5 out of 5 stars (5)
4,343 users

WAVE Accessibility Extension Compatible with Firefox 57+

Evaluate web accessibility within the Firefox browser. When activated, the WAVE extension injects icons and indicators into your page to give feedback about accessibility and to facilitate manual evaluation.

Rated 5 out of 5 stars (1)
3,046 users

Wizdler Compatible with Firefox 57+

Parses the WSDL files and generates SOAP messages for you.

Rated 5 out of 5 stars (1)
1,379 users

User Agent Switcher Compatible with Firefox 57+

Easily override the browser's User-Agent string

Rated 4 out of 5 stars (29)
7,276 users

Selenium IDE: Screen Capture Extension Requires Restart

Extension to Selenium IDE for various screen capture capabilities.

Not yet rated
1,420 users

CodeBurner for Firebug Requires Restart

CodeBurner is a Firefox add-on that integrates with Firebug, to extend it with reference material for HTML and CSS.

Rated 3 out of 5 stars (35)
18,039 users

Take Screenshots, Screen Grab with Online Upload Requires Restart

Capture screen grabs aka screen shots and instantly upload online to ImageBam for easy online sharing and storage.

Rated 4 out of 5 stars (12)
1,187 users

Open in Tor Browser Compatible with Firefox 57+

Open current page or link in tor browser for better privacy

Rated 4 out of 5 stars (45)
5,493 users

Image Zoom (ugly fixes) Requires Restart

An ugly attempt at fixing Image Zoom

Rated 4 out of 5 stars (15)
3,315 users

Open Two-Factor Authenticator

A sync-able open-source two-factor authenticator

Rated 3 out of 5 stars (8)
1,244 users

Extended Statusbar

A Statusbar with speed, percentage, time and loaded size (similar to Opera's one)

Rated 4 out of 5 stars (249)
39,725 users

Modify Headers Requires Restart

Add, modify and filter the HTTP request headers sent to web servers. This addon is particularly useful for Mobile web development, HTTP testing and privacy.

Rated 4 out of 5 stars (77)
107,855 users

Remove Cookies and DOM Storage Button

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

Rated 4 out of 5 stars (7)
1,378 users