Privacy & Security

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User Agent Overrider No Restart

Override browser user agent string

Rated 4 out of 5 stars (55)
85,160 users

AdBlock Lite No Restart

Block ads seamlessly on popular websites

Rated 4 out of 5 stars (30)
83,627 users

RequestPolicy

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 (231)
83,346 users

YouTube™ AdBlock No Restart

YouTube™ AdBlock removes all sorts of advertisement from YouTube

Rated 4 out of 5 stars (11)
81,860 users

Click&Clean

The quick and easy way to delete your browsing history, erase all temporary internet files, remove downloaded files history, cookies, Flash LSO, typed URLs. Allows to delete private data when Firefox closes. Supported ext. tools like CCleaner.

Rated 5 out of 5 stars (98)
81,187 users

Privacy Badger No Restart

Protects your privacy by blocking spying ads and invisible trackers. Warning: This add-on is in alpha, so you may find some bugs! Read more: https://www.eff.org/privacybadger

Rated 4 out of 5 stars (104)
80,600 users

Bitdefender QuickScan

The quickest way to find out if your computer is infected!
Bitdefender QuickScan is a very fast antivirus scanner, able to determine in a matter of seconds if a system is infected with malware.
More on http://quickscan.bitdefender.com/faq

Rated 4 out of 5 stars (60)
79,125 users

RefControl

Control what gets sent as the HTTP Referer on a per-site basis.

Rated 4 out of 5 stars (183)
76,409 users

Ad-Aware Ad Block No Restart

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 3 out of 5 stars (12)
75,180 users

Random Agent Spoofer No Restart

Rotates complete browser profiles ( from real browsers / devices ) at a user defined time interval. It includes many extra privacy enhancing options

Rated 5 out of 5 stars (127)
71,635 users

YesScript

A JavaScript blacklist

Rated 4 out of 5 stars (210)
70,719 users

Multifox No Restart Featured

An extension that allows Firefox to connect to websites using different user names. Simultaneously.

*** Multifox 2 users: try the "Window Mode" (Addons - Multifox - Options) ***

Rated 4 out of 5 stars (97)
70,471 users

Google search link fix No Restart Featured

This extension prevents Google and Yandex search pages from modifying search result links when you click them. This is useful when copying links but it also helps privacy by preventing the search engines from recording your clicks.

Rated 5 out of 5 stars (129)
68,590 users

Private Tab No Restart Featured

Adds private tabs.

Rated 5 out of 5 stars (218)
66,422 users

signTextJS No Restart

window.crypto.signText replacement

Rated 4 out of 5 stars (8)
64,717 users

Stop Ads No Restart

Stopads , the new generation ad blocker allows you to navigate serenely on the web without intrusive ads ( pop up, siste under) or tracking.
Stopads effectively blocks all types of advertising on any web pages .

Rated 4 out of 5 stars (31)
63,956 users

Stealthy No Restart

Does your country/organization block you from facebook, youtube or others?
Is the service you want unavailable in your country?
Stealthy is the solution for you.
Unlike other extensions we do the work of look for fast proxies for you.

Rated 3 out of 5 stars (67)
62,441 users

Autofill Forms

Autofill Forms enables you to fill out web forms with one click.

Rated 3 out of 5 stars (411)
61,013 users

Fasterfox Lite

Fasterfox Lite: Performance and network tweaks for Firefox, without the Enhanced Prefetching. This is a fork from the original "Fasterfox".

Rated 4 out of 5 stars (251)
60,354 users

Link Alert

Displays an icon in the tooltip or next to the cursor indicating the target of a link.

Rated 4 out of 5 stars (121)
59,628 users