Extensions
Explore powerful tools and features to customize Firefox and make the browser all your own.
Grammar and Spell Checker - LanguageTool
With this extension you can check text with the free style and grammar checker LanguageTool. It finds many errors that a simple spell checker cannot detect, like mixing up there/their, a/an, or repeating a word.
401,024 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.
110,554 users
SponsorBlock - Skip Sponsorships on YouTube
Easily skip YouTube video sponsors. When you visit a YouTube video, the extension will check the database for reported sponsors and automatically skip known sponsors. You can also report sponsors in videos. Other browsers: https://sponsor.ajay.app
697,534 users
SteamDB
Adds SteamDB links and new features on the Steam store and community. View lowest game prices and stats.
89,509 users
Time Tracker - Web Habit Builder
Track time, analyze your habits and block addictive sites
5,831 users
Power Thesaurus
Use the power of synonyms by button in toolbar, right-click or by word selection on any page.
6,467 users
Time Tracker - Web Habit Builder
Track time, analyze your habits and block addictive sites
5,831 users
Checker Plus for Gmail™
Get notifications, read, listen to or delete emails without opening Gmail and easily manage multiple accounts.
28,930 users
