Dark Reader
Dark mode for every website. Take care of your eyes, use dark theme for night and daily browsing.
1.267.683 brûkers
Return YouTube Dislike
Returns ability to see dislike statistics on youtube
908.791 brûkers
YouTube High Definition
YouTube High Definition is a powerful tool that automatically plays all YouTube videos in HD, changes video player size, offers auto-stop and mute, and much more.
156.844 brûkers
EPUBReader
Read ePub files right in Firefox. No additional software needed!
126.061 brûkers
LeechBlock NG
LeechBlock NG is a simple productivity tool designed to block those time-wasting sites that can suck the life out of your working day. All you need to do is specify which sites to block and when to block them.
107.735 brûkers
Gesturefy
Navigate, operate, and browse faster with mouse gestures! A customizable mouse gesture add-on with a variety of different commands.
86.765 brûkers
Simple Tab Groups
Create, modify, and quickly change tab groups
77.677 brûkers
Tabliss - New Tab
A beautiful New Tab page with many customisable backgrounds and widgets that does not require any permissions.
73.751 brûkers
RoboForm Password Manager
RoboForm, the #1 ranked Password Manager makes your life easier by remembering passwords and logging you into websites automatically
53.798 brûkers
SoundFixer
Helps you fix annoying sound problems on sites like YouTube: audio in one channel only, too quiet or too loud. (Unfortunately, this extension does not work on all websites because of cross-domain issues — but it does work on YouTube!)
43.158 brûkers
Dictionary Anywhere
View definitions easily as you browse the web. Double-click any word to view its definition in a small pop-up bubble. It also supports Spanish, German, French language alongside English. Enjoy Reading Uninterrupted!!!.
36.208 brûkers
Tomato Clock
Tomato Clock is a simple browser extension that helps with online time management.
30.747 brûkers
Foxy Gestures
Mouse gestures for Firefox. A web extension alternative to FireGestures created by a long time FireGestures user.
18.293 brûkers
Link Gopher
Extracts all links from web page, sorts them, removes duplicates, and displays them in a new tab for inspection or copy and paste into other systems.
15.582 brûkers
Default Bookmark Folder
Allows you to choose the default bookmark location folder and quickly bookmark pages via a dedicated icon.
11.590 brûkers
Swift Selection Search
Swiftly access your search engines in a popup panel when you select text in a webpage. Context menu also included!
10.312 brûkers
Simple Gesture for Android
Adds touch gestures for Android. (P.S. "Quick Gestures" is great addon. I hope it be updated.)
1.803 brûkers
Time Tracker - Web Habit Builder
Track time, analyze your habits and block addictive sites
911 brûkers
Tampermonkey
Tampermonkey is the world's most popular userscript manager.
766.305 brûkers
Cisco Webex Extension
Join Webex meetings using Firefox ™
591.333 brûkers
MetaMask – Crypto Wallet
The most secure wallet for crypto, NFTs, and DeFi, trusted by millions of users
353.697 brûkers
1Password: Password Manager
The best way to experience 1Password in your browser. Easily sign in to sites, generate passwords, and store secure information, including logins, credit cards, notes, and more.
330.997 brûkers
Ecosia — The search engine that plants trees 🌱
This extension adds Ecosia.org as the default search engine to your browser — it’s completely free!
271.727 brûkers
I don't care about cookies
Get rid of cookie warnings from almost all websites!
264.614 brûkers
Greasemonkey
Customize the way a web page displays or behaves, by using small bits of JavaScript.
164.079 brûkers