Featured Extensions

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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 (1,585)
1,790,267 users

Privacy Badger Compatible with Firefox 57+ Featured

Protects your privacy by blocking spying ads and invisible trackers.

Rated 4 out of 5 stars (170)
258,188 users

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 (133)
36,061 users

Classic Toolbar Buttons Featured

'Classic Toolbar Buttons' add-on restores old toolbar button ui (known from Fx 4-7s small view, Fx 4-12s large view & Tb 5-14) for current Firefox, Thunderbird and Seamonkey versions.

Beta builds on versions page!

Rated 5 out of 5 stars (133)
29,590 users

Ecosia — The search engine that plants trees! Featured

Ecosia is a search engine that donates 80% of its surplus income to planting trees. By searching with Ecosia you can help the environment for free.
This extension adds Ecosia.org as the default search engine to your Firefox. Give it a try!

Rated 5 out of 5 stars (153)
202,454 users

Font Finder Requires Restart Featured

FontFinder is created for designers, developers and typographers. It allows a user to analyze the font information of any element on a page, copy any piece(s) of that information to the clipboard, and perform inline replacements to test new layouts.

Rated 4 out of 5 stars (75)
26,499 users

Desktop Messenger for Telegram™ Compatible with Firefox 57+ Featured

An easy access to Telegram, and notifies you of incoming posts.

Rated 5 out of 5 stars (19)
4,397 users

New Tab Override (WebExtension) Compatible with Firefox 57+ Featured

New Tab Override brings back the ability to change the page which is shown when opening a new tab.

Rated 5 out of 5 stars (164)
107,425 users

Tab Reloader (Page Reloader) Compatible with Firefox 57+ Featured

An easy-to-use tab reloader with custom reloading time settings for individual tabs

Rated 4 out of 5 stars (24)
4,711 users

Cleanest Addon Manager Featured

Cleanup your Addon Manager

Rated 5 out of 5 stars (134)
11,581 users

Video Downloader Prime Compatible with Firefox 57+ Featured

Easily download most popular video formats.

Rated 4 out of 5 stars (70)
39,618 users

Clean Uninstall Featured

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

Rated 4 out of 5 stars (29)
7,628 users

Emoji Cheatsheet Compatible with Firefox 57+ Featured

A reference for the codes to generate Emojis on popular sites like GitHub or Basecamp and Unicode characters for Twitter and Facebook.
Search Emojis by name or view recently selected items. Emojis are automatically copied to the clipboard.

Rated 4 out of 5 stars (45)
40,497 users

Easy Youtube Video Downloader Express Compatible with Firefox 57+ Featured

"Best Youtube Video Downloader", Only one with 1080p Full-HD and 256kbps MP3 Direct Links. A clean, fast and simple addon for superfast and easy downloads in FLV, 3GP, MP3, MP4, 720p, 1080p qualities on Youtube pages.

Rated 4 out of 5 stars (1,263)
217,790 users

Honey Compatible with Firefox 57+ Featured

Automatically find and try coupon codes with 1-click. Works at thousands of stores in the US, Canada, Australia, India and the UK.

Rated 4 out of 5 stars (189)
106,842 users

iMacros for Firefox Featured

Automate Firefox. Record and replay repetitive tasks. If you're tired of manually visiting the same sites, filling out forms, downloading files and extracting data, then iMacros is for you! Save time, effort and money with iMacros browser automation!

Rated 4 out of 5 stars (526)
1,334,594 users

New Tab Tools Featured

Customizes the new tab page. Add more tiles. Have a background image. Set new tile images and titles. See recently closed tabs. And more...

*The first WebExtension version has been in the AMO review queue for two weeks! Don't blame me.*

Rated 4 out of 5 stars (234)
34,215 users

Torrent Tornado Requires Restart Featured

A Torrent Client for Firefox and SeaMonkey, runs everywhere, created in pure JavaScript without binary software!

Rated 4 out of 5 stars (99)
37,319 users

AdBlock for Firefox Compatible with Firefox 57+ Featured

The most popular ad blocker for Chrome and Safari, now available for Firefox! Block all advertisements on all web pages, even Facebook, Youtube, and Hulu. Browse faster, too! Most ads aren't even downloaded at all, saving you time and bandwidth.

Rated 4 out of 5 stars (128)
339,075 users

Gmail™ Notifier (restartless) Featured

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

Rated 4 out of 5 stars (284)
73,033 users