Extensions are like apps for your browser.
They add features to Firefox to make browsing faster, smarter, or just plain fun.
Undo Close Tab
Allows you to restore the last closed tab with just one button click and gives you access to the list of recently closed tabs in the button context menu.
33,121 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.
73,984 users
Download Manager (S3)
View and manage downloads from a tidy status bar This is a new life in Firefox 26+ for old well-known addon Download Statusbar New Features: Replace Downloads Library page. Now you have full control of your downloads history!
77,717 users
Ghostery – Privacy Ad Blocker
Ghostery is a powerful privacy extension. Block ads, stop trackers and speed up websites.
1,195,143 users
Decentraleyes
Protects you against tracking through "free", centralized, content delivery. It prevents a lot of requests from reaching networks like Google Hosted Libraries, and serves local files to keep sites from breaking. Complements regular content blockers.
202,531 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.
725,938 users
Video DownloadHelper
The easy way to download and convert Web videos from hundreds of YouTube-like sites.
2,692,482 users
NoScript Security Suite
The best security you can get in a web browser! Allow active content to run only from sites you trust, and protect yourself against XSS other web security exploits. Disabled and can't reinstall? https://tinyurl.com/moz-ext-cert
1,496,144 users
Ghostery – Privacy Ad Blocker
Ghostery is a powerful privacy extension. Block ads, stop trackers and speed up websites.
1,195,143 users
LastPass Password Manager
LastPass, an award-winning password manager, saves your passwords and gives you secure access from every computer and mobile device.
866,778 users
Bitwarden - Free Password Manager
A secure and free password manager for all of your devices.
128,035 users
1Password X – 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.
49,633 users
RoboForm Password Manager
RoboForm, the #1 ranked Password Manager makes your life easier by remembering passwords and logging you into websites automatically
86,426 users