Privacy & Security

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uMatrix Featured

Point & click to forbid/allow any class of requests made by your browser. Use it to block scripts, iframes, ads, facebook, etc.

Rated 5 out of 5 stars (116)
55,172 users

Blur Featured

Protect your Passwords, Payments, and Privacy.

Rated 4 out of 5 stars (761)
137,835 users

Gmail™ Notifier (restartless) Featured

Multiple account (or label) Gmail notifier (without storing passwords)

Rated 4 out of 5 stars (266)
90,386 users

Keyword Search Featured

Search in the address bar without changing your search engine.

Rated 5 out of 5 stars (91)
8,078 users

Bloody Vikings! Featured

Simplifies the use of temporary e-mail addresses in order to protect your real address from spam. Supports inter alia 10minutemail.com and anonbox.net.

Rated 5 out of 5 stars (59)
16,328 users

NoScript Security Suite Requires Restart Featured

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 and Clickjacking attacks.

Rated 5 out of 5 stars (1,558)
2,227,519 users

AdBlocker Ultimate Featured

Free and improved ad blocker. Completely remove ALL ads. No "acceptable" ads or whitelisted advertisers, block tracking, block malware!

Rated 5 out of 5 stars (1,558)
404,436 users

uBlock Origin Featured

Finally, an efficient blocker. Easy on CPU and memory.

Rated 5 out of 5 stars (1,464)
3,863,089 users

Clean Uninstall Featured

Uninstall an extension and clean its fingerprints (such as stored preferences)

Rated 4 out of 5 stars (24)
7,391 users

QuickJava Requires Restart Featured

Allows quick enable and disable of Javascript, Cookies, Image Animations, Flash, Silverlight, Images, Stylesheets and Proxy from the Toolbar. This is great for increasing security or decreasing bandwidth. (Read details for info on Java with FF52+!)

Rated 5 out of 5 stars (188)
252,555 users

Bluhell Firewall Featured

Get a faster browsing experience by blocking nasty web resources using Bluhell Firewall, the lightweight Ad-Blocker and Tracking/Privacy Protector.

Rated 5 out of 5 stars (353)
90,279 users

Decentraleyes Featured

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 5 out of 5 stars (112)
78,745 users

Adblock Plus Featured

Blocks annoying video ads on YouTube, Facebook ads, banners and much more.

Adblock Plus blocks all annoying ads, and supports websites by not blocking unobtrusive ads by default (configurable).

Rated 5 out of 5 stars (5,123)
17,443,461 users

Private Tab Featured

Adds private tabs.

Rated 5 out of 5 stars (236)
63,665 users

Smart HTTPS Featured

Automatically changes HTTP addresses to the secure HTTPS, and if loading encounters error, reverts it back to HTTP.

Rated 4 out of 5 stars (27)
32,457 users

Ghostery Compatible with Firefox 57+ Featured

Increase your browsing privacy, protection, and speed.

Rated 5 out of 5 stars (1,367)
1,279,841 users

BetterPrivacy-signed Requires Restart Featured

Control a new, trickier kind of cookie, better known as an LSO or Flash cookie. The BetterPrivacy safeguard offers various ways to handle Flash-cookies created by webpages with the help of your Flash plug-in...

Rated 5 out of 5 stars (421)
405,288 users

DuckDuckGo Plus Featured

DuckDuckGo is the search engine that doesn't track you. This add-on makes DuckDuckGo your default search engine and includes some other useful features.

Rated 4 out of 5 stars (175)
350,437 users

User-Agent Switcher Featured

Quickly and easily switch between popular user-agent strings.

Rated 4 out of 5 stars (35)
66,803 users

Lightbeam for Firefox Featured

Lightbeam is a Firefox add-on that enables you to see the first and third party sites you interact with on the Web. Using interactive visualizations, Lightbeam shows you the relationships between these third parties and the sites you visit.

Rated 4 out of 5 stars (427)
356,916 users