Extensions are like apps for your browser.
They add features to Firefox to make browsing faster, smarter, or just plain fun.
Spoofs User-Agent strings of your browser with a new one globally, randomly or per hostname
a download manager with multi-threading support
Encrypt the web! HTTPS Everywhere is a Firefox extension to protect your communications by enabling HTTPS encryption automatically on sites that are known to support it, even when you type URLs or follow links that omit the https: prefix.
Download YouTube videos in all available formats and extract the original audio files
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.
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.
LastPass, an award-winning password manager, saves your passwords and gives you secure access from every computer and mobile device.
A secure and free password manager for all of your devices.
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.
RoboForm, the #1 ranked Password Manager makes your life easier by remembering passwords and logging you into websites automatically