Extensions are like apps for your browser.
They add features to Firefox to make browsing faster, smarter, or just plain fun.
WORKS WITH NEW YOUTUBE LAYOUT, "Best Youtube Video Downloader", Only one with 1080p Full-HD and 256kbps MP3 Direct Links. A clean, fast and simple addon for superfast and easy downloads in FLV, 3GP, MP3, MP4, 720p, 1080p qualities on Youtube pages.
477 907 users
Make the browser forget website data (like cookies, local storage, etc.), except for the data you want to keep by adding domains to a whitelist, graylist, blacklist, or redlist.
12 948 users
Listen to live radio stations from around the world!
66 303 users
Makes every page (or only pages that you want) to have light text on dark background. Exact colors are customizable.
44 099 users
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.
214 349 users
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.
782 392 users
Finally, an efficient blocker. Easy on CPU and memory.
5 074 894 users
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
1 573 090 users
LastPass, an award-winning password manager, saves your passwords and gives you secure access from every computer and mobile device.
902 312 users
A secure and free password manager for all of your devices.
139 830 users
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.
56 588 users
RoboForm, the #1 ranked Password Manager makes your life easier by remembering passwords and logging you into websites automatically
88 467 users