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To use these add-ons, you'll need to download Firefox.
- Extensions
- Themes
- for Firefox
- Dictionaries & Language Packs
- Other Browser Sites
- Add-ons for Android
6,711 extensions found in Privacy & Security
uBlock Origin
Finally, an efficient wide-spectrum content blocker. Easy on CPU and memory.
Rated 4.8 out of 5Raymond Hill
10,070,652 users
Privacy Badger
Automatically learns to block hidden trackers. Made by the leading digital rights nonprofit EFF to stop companies from spying on you.
Rated 4.8 out of 5EFF Technologists
1,847,923 users
AdGuard AdBlocker
Unmatched adblock extension against advertising and pop-ups. Blocks ads on Facebook, Youtube and all other websites.
Rated 4.7 out of 5Adguard Software Ltd
1,526,446 users
DuckDuckGo Search & Tracker Protection
Actively protects your data in your current browser
Rated 4.3 out of 5DuckDuckGo
1,236,978 users
Ghostery – Privacy Ad Blocker
The best privacy tool and ad blocker extension for Firefox. Stop trackers, speed up websites and block ads everywhere including YouTube and Facebook.
Rated 4.3 out of 5Ghostery
1,016,686 users
Bitwarden Password Manager
At home, at work, or on the go, Bitwarden easily secures all your passwords, passkeys, and sensitive information.
Rated 4.6 out of 5Bitwarden Inc.
884,517 users
536,912 users
437,789 users
NoScript Security Suite
The best security you can get in a web browser! Allow potentially malicious web content to run only from sites you trust. Protect yourself against XSS other web security exploits.
Rated 4.4 out of 5Giorgio Maone
264,941 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.
Rated 4.8 out of 5Thomas Rientjes
263,929 users
FoxyProxy Standard
FoxyProxy is an open-source, advanced proxy management tool that completely replaces Firefox's limited proxying capabilities. No paid accounts are necessary; bring your own proxies or buy from any vendor. The original proxy tool, since 2006.
Rated 4 out of 5Eric Jung
208,592 users
102,596 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.
Rated 4.1 out of 5Ray
87,734 users
SingleFile
Save an entire web page—including images and styling—as a single HTML file.
Rated 4.8 out of 5gildas
78,347 users
Popup Blocker (strict)
Strictly block all popup requests from any website by default. A notification window is opened to allow you accept, reject, open the popup in background page, or redirect the current page to popup address
Rated 4.2 out of 5Jeremy Schomery
76,259 users
72,917 users
71,697 users
Don't track me Google
Removes the annoying link-conversion at Google Search / maps / ...
Rated 4.6 out of 5Rob W
70,442 users
Clear Cache
Advanced cache clearing with time periods, current tab filter, and smart notifications. Perfect for developers and power users. F9 shortcut included!
Rated 4.4 out of 5TenSoja
57,791 users
RoboForm Password Manager
RoboForm, the #1 ranked Password Manager makes your life easier by remembering passwords and logging you into websites automatically
Rated 4.3 out of 5Siber Systems
56,042 users
PopUpOFF
Removes and prevents popups, overlays and cookie notifications, other tools do not. Enjoy the original look of the internet.
Rated 4.3 out of 5RomanistHere
45,329 users
Clear Browsing Data
Delete browsing data directly from the browser toolbar. Clear cookies, history and cache with a single click.
Rated 4.4 out of 5Armin Sebastian
33,173 users
FoxyTab
Collection of Tab Related Actions e.g. Duplicate, Close Duplicates, Close to the Left, Copy Title, Merge Windows, Save as PDF, Copy Urls Tab/All/Left/Right, Host keep/close/close other, Sort by URL/Title, Asce/Desc, Move, Reload, Reload Timer
Rated 4.6 out of 5erosman
20,673 users
Port Authority
Blocks malicious websites from port-scanning your computer/network and dynamically blocks all LexisNexis endpoints from running their invasive data collection scripts.
Rated 4.7 out of 5Hacks and Hops
17,204 users
