
Stylus
Redesign your favorite websites with Stylus, an actively developed and community driven userstyles manager. Easily install custom themes from popular online repositories, or create, edit, and manage your own personalized CSS stylesheets.
126,690 users
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.
101,145 users
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.
153,307 users
Return YouTube Dislike
Returns ability to see dislike statistics on youtube
873,144 users
239 users
224 users
743 users
Tab Session Manager
Save and restore the state of windows and tabs. It also supports automatic saving and cloud sync.
144,924 users
Tree Style Tab
Show tabs like a tree.
184,785 users
OneTab
OneTab - Too many tabs? Convert tabs to a list and reduce browser memory
158,541 users
Tabliss - New Tab
A beautiful New Tab page with many customisable backgrounds and widgets that does not require any permissions.
74,674 users
Return YouTube Dislike
Returns ability to see dislike statistics on youtube
873,144 users
BetterTTV
Enhances Twitch and YouTube with new features, emotes, and more.
480,005 users
Facebook Container
Prevent Facebook from tracking you around the web. The Facebook Container extension for Firefox helps you take control and isolate your web activity from Facebook.
935,511 users
Augmented Steam
Augments your Steam Experience
60,329 users
210 users
239 users
471 users
Dark Reader
Dark mode for every website. Take care of your eyes, use dark theme for night and daily browsing.
1,208,900 users
Read Aloud: A Text to Speech Voice Reader
Read out loud the current web-page article with one click. Supports 40+ languages.
193,079 users
Dark Mode
Dark theme and night shift mode for every website. Care your eyes, use Dark Mode for night and daily web browsing.
38,698 users
Sidebery
Vertical tabs tree and bookmarks in sidebar with advanced containers configuration, grouping and many other features.
62,933 users
Feedbro
Advanced Feed Reader - Read news & blogs or any RSS/Atom/RDF source.
44,063 users
Adaptive Tab Bar Color
Changes the color of Firefox theme to match the website’s appearance.
35,222 users
Emoji
It permits just with a single click to copy an emoji. There is a search-box and the "Most used emojis" section (the first one). If you want to send feedback or report bug, please contact me
33,103 users
Facebook Container
Prevent Facebook from tracking you around the web. The Facebook Container extension for Firefox helps you take control and isolate your web activity from Facebook.
935,511 users