Privacy and Security

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PrefBar Requires Restart

The all in one toolbar(item). Houses and manages bigger amounts of buttons (Clear Cache, Clear Cookies, ...), Menus (User Agent spoof...) and checkboxes (Javascript, Flash, ...). Extensible from online-database or with self created buttons.

Rated 5 out of 5 stars (39)
14,994 users
Updated August 29, 2016

uBlock Origin

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

Rated 5 out of 5 stars (598)
1,293,325 users
Updated August 29, 2016

Saved Password Editor Requires Restart

Adds the ability to create and edit entries in the password manager.

Rated 5 out of 5 stars (230)
87,393 users
Updated August 24, 2016

CryptoData Requires Restart

Easily and quickly to encrypt / decrypt:
Private messages via e-mail, blogs, social networks, forums, websites, images, etc
Support: Firefox, Thunderbird and SeaMonkey

New feature: CryptoPad (crypto-notepad)

Rated 5 out of 5 stars (6)
1,583 users
Updated August 17, 2016

Bluhell Firewall

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 (289)
111,446 users
Updated August 9, 2016

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 (1,566)
2,010,914 users
Updated August 8, 2016

RequestPolicy Continued

Be in control of which cross-site requests are allowed. Improve the privacy of your browsing by not letting other sites know your browsing habits. Secure yourself from Cross-Site Request Forgery (CSRF) and other attacks.

Rated 4 out of 5 stars (4)
7,791 users
Updated July 30, 2016

Mail Merge Requires Restart

Mass Mail and Personal Mail

Rated 5 out of 5 stars (142)
50,999 users
Updated July 25, 2016

No Resource URI Leak

Deny resource:// access to Web content: We fill the hole to defend against fingerprinting. Very important to Firefox privacy. A direct workaround for bugzil.la/863246

Rated 5 out of 5 stars (14)
4,294 users
Updated July 25, 2016

Gmail Mail Sidebar

Gmail Mail Sidebar brings Gmail right into your Firefox Sidebar.

Rated 5 out of 5 stars (4)
8,552 users
Updated July 24, 2016

Click-to-Play Manager

Manages the Click-to-Play domain whitelist.

Rated 4 out of 5 stars (11)
2,819 users
Updated July 23, 2016

Cert Viewer Plus Requires Restart

Certificate viewer enhancements: PEM format view, trust configuration

Rated 4 out of 5 stars (6)
4,228 users
Updated July 20, 2016

Fox Web Security Requires Restart

Protection from adult content (parental control) and from dangerous sites.
Entrust protection for yourself and your children to professionals!

Rated 5 out of 5 stars (23)
24,540 users
Updated July 7, 2016

Responsible Blocker

The "Responsible Blocker" arrives to save the Internet, this extension blocks all those annoying ads, but allows only small and acceptable ads, so the websites you like can continue online.

The "Responsible Blocker" arrives to save the Internet!

Not yet rated
6 users
Updated July 4, 2016

AdNauseam

Fight back against advertising surveillance

Rated 4 out of 5 stars (6)
4,710 users
Updated June 25, 2016

TotalSpoof

Set most common Firefox user-agent and window.navigator values.

Rated 3 out of 5 stars (3)
779 users
Updated June 21, 2016

Perspectives Requires Restart

Connect securely to https websites by checking certificates with network notaries. See http://www.perspectives-project.org

Rated 4 out of 5 stars (44)
4,606 users
Updated June 21, 2016

XingClean

Der Spam-Filter für Xing! Entfernt störenden Spam aus der Xing-Timeline und den Gruppen.

Not yet rated
4 users
Updated June 21, 2016

URLFilter

Block advertisement and access to adult sites

Rated 4 out of 5 stars (15)
3,766 users
Updated June 17, 2016

Ad-Aware Ad Block

Ad-Aware Ad Block improves your browser’s speed and protects your privacy by blocking ads and trackers. It also improves online security by blocking malicious URLs and establishing the most secure connection available.

Rated 4 out of 5 stars (7)
78,810 users
Updated June 14, 2016