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.
162,253 users
OneTab
OneTab - Too many tabs? Convert tabs to a list and reduce browser memory
150,655 users
Read Aloud: A Text to Speech Voice Reader
Read out loud the current web-page article with one click. Supports 40+ languages.
144,505 users
Tab Session Manager
Save and restore the state of windows and tabs. It also supports automatic saving and cloud sync.
135,840 users
EPUBReader
Read ePub files right in Firefox. No additional software needed!
130,900 users
YouTube NonStop
Tired of getting that "Video paused. Continue watching?" confirmation dialog? This extension autoclicks it, so you can listen to your favorite music uninterrupted. Working on YouTube and YouTube Music!
129,335 users
Flagfox
Displays a country flag depicting the location of the current website's server and provides a multitude of tools such as site safety checks, whois, translation, similar sites, validation, URL shortening, and more...
113,069 users
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.
109,443 users
User-Agent Switcher and Manager
Spoof websites trying to gather information about your web navigation—like your browser type and operating system—to deliver distinct content you may not want.
94,304 users
Disconnect
Make the web faster, more private, and more secure.
93,666 users
Gesturefy
Navigate, operate, and browse faster with mouse gestures! A customizable mouse gesture add-on with a variety of different commands.
93,354 users
Download All Images
Easily save images with a wide range of customization features, such as file size, dimensions, and image type.
88,235 users
Simple Tab Groups
Create, modify, and quickly change tab groups
79,458 users
Tab Reloader (page auto refresh)
An easy-to-use tab reloader with custom reloading time settings for individual tabs
77,062 users
Unhook: Remove YouTube Recommended Videos Comments
Hide YouTube related videos, comments, video suggestions wall, homepage recommendations, trending tab, and other distractions.
75,838 users
Sidebery
Vertical tabs tree and bookmarks in sidebar with advanced containers configuration, grouping and many other features.
75,363 users
Tabliss - New Tab
A beautiful New Tab page with many customisable backgrounds and widgets that does not require any permissions.
71,847 users
Block Site
A customizable, password-protected website blocker and redirector.
71,022 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.
68,301 users
Don't track me Google
Removes the annoying link-conversion at Google Search / maps / ...
65,558 users
Auto Tab Discard
Increase browser speed and reduce memory load and when you have numerous open tabs.
64,642 users
New Tab Override
New Tab Override allows you to set the page that shows whenever you open a new tab.
63,683 users
Turbo Download Manager
A download manager with the ability to pause and resume downloads, download remote files, and more.
63,418 users
RoboForm Password Manager
RoboForm, the #1 ranked Password Manager makes your life easier by remembering passwords and logging you into websites automatically
62,424 users
Clear Cache
Clear browser cache with a single click or via the F9 key. F9 Fever! ;)
61,951 users