Firefox Relay
Firefox Relay lets you generate email aliases that forward to your real inbox. Use it to hide your real email address and protect yourself from hackers and unwanted mail.
252,109 users
Firefox Translations
Translate websites in your browser, privately, without using the cloud. The functionality from this extension is now integrated into Firefox.
67,073 users
Firefox Multi-Account Containers
Firefox Multi-Account Containers lets you keep parts of your online life separated into color-coded tabs. Cookies are separated by container, allowing you to use the web with multiple accounts and integrate Mozilla VPN for an extra layer of privacy.
410,892 users
GIPHY for Firefox
Bring the power of a GIF search engine anywhere on the web. Respond to emails, tweets and more with GIFs quickly and easily. Add GIPHY GIFs to your Gmail, Facebook, Twitter and more. Just search, drag and drop or right click!
7,368 users
Turn Off the Lights for Firefox
The entire page will be fading to dark, so you can watch the videos as if you were in the cinema. Works for YouTube and Beyond. Dark mode for all websites. It works for all known video sites such as YouTube, Vimeo, Twitch, Dailymotion, Facebook, etc.
47,749 users
Xdebug Helper for Firefox
This extension is very useful for PHP developers that are using PHP tools with Xdebug support like PHPStorm, Eclipse with PDT, Netbeans and MacGDBp or any other Xdebug compatible profiling tool like KCacheGrind, WinCacheGrind or Webgrind.
17,100 users
Show Video Controls for Firefox
Automatically enables video controls when playing html webm videos.
3,260 users
RikaiRebuilt
Featuring a built in Japanese dictionary with support to hear audio recordings of Japanese words from JDIC as well as the ability to import words in to the flashcard app Anki, this is a port of the old Firefox addon "Rikaisama"
424 users
Fireburp
Adds an http header to each request to highlight them in Burp Proxy https://github.com/rumiljonov/fireburp
36 users
AdBlock for Firefox
The most popular ad blocker for Chrome and Safari, now available for Firefox! Block all advertisements on all web pages, even Facebook, Youtube, and Hulu. Browse faster, too! Most ads aren't even downloaded at all, saving you time and bandwidth.
1,385,477 users
![Fire Fox, The Anime Girl : Nebula Space [Blue]](https://addons.mozilla.org/user-media/version-previews/full/3864/3864349.svg?modified=1631433964)
![Fire Fox, The Anime Girl : Nebula Space [Red]](https://addons.mozilla.org/user-media/version-previews/full/4028/4028929.svg?modified=1732366437)
