Featured Add-ons

by Mozilla

157 Add-ons in this Collection

Adblock Plus by Wladimir Palant

Rated 5 out of 5 stars 4,823 reviews

22,236,729 users

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).

Download YouTube Videos as MP4 by ialc

Rated 4 out of 5 stars 321 reviews

1,051,316 users

An extension that adds direct links to download YouTube videos as MP4 and FLV. It has a simple interface and it downloads videos directly from YouTube. The extension integrates with YouTube's interface and adds a download button below the player.

DownThemAll! by Nils Maier, Federico Parodi, others

Rated 5 out of 5 stars 1,555 reviews

1,537,168 users

The first and only download manager/accelerator built inside Firefox!

Ghostery by José María Signanini, Brad McDermott

Rated 5 out of 5 stars 1,103 reviews

1,481,884 users

Protect your privacy. See who's tracking your web browsing and block them with Ghostery.

YouTube Video and Audio Downloader by InBasic, Alopepeo

Rated 4 out of 5 stars 236 reviews

678,677 users

Downloads YouTube videos in all available formats (FLV, MP4, WebM, and 3GP) with video quality of your choice. It also contains a pure JavaScript library to extract the ORIGINAL audio file embedded in video files.

NoScript Security Suite by Giorgio Maone

Rated 5 out of 5 stars 1,458 reviews

2,325,831 users

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.

Greasemonkey by Anthony Lieuallen, Aaron Boodman, others

Rated 4 out of 5 stars 941 reviews

1,384,980 users

Customize the way a web page displays or behaves, by using small bits of JavaScript.

FlashGot Mass Downloader by Giorgio Maone

Rated 5 out of 5 stars 478 reviews

1,128,765 users

Download all the links, movies and audio clips of a page at the maximum speed with a single click, using the most popular, lightweight and reliable external download managers.

Web of Trust - WOT by WOT Services

Rated 4 out of 5 stars 1,550 reviews

1,250,229 users

Find out which websites you can trust. WOT adds intuitive traffic light-style icons next to search results and URLs to help you make informed decisions about whether to visit a site or not.

iMacros for Firefox by iMacros

Rated 4 out of 5 stars 368 reviews

327,188 users

Automate Firefox. Record and replay repetitious work. If you love the Firefox web browser, but are tired of repetitive tasks like visiting the same sites every days, filling out forms, and remembering passwords, then iMacros for Firefox is the soluti...

ZenMate Security & Privacy VPN by ZenMate

Rated 4 out of 5 stars 71 reviews

135,338 users

Unblock the web and change your IP with 5 locations across the globe. ZenMate secures your browsing with encryption - protecting you from hackers, snoopers and data thieves who prey on unsecure connections.

Stylish by Jason Barnabe

Rated 4 out of 5 stars 736 reviews

783,132 users

Restyle the web with Stylish, a user styles manager. Stylish lets you easily install themes and skins for Google, Facebook, YouTube, Orkut, and many, many other sites. You can even customize Firefox and other programs themselves.

LastPass Password Manager by LastPass

LastPass, an award-winning password manager, saves your passwords and gives you secure access from every computer and mobile device.

YouTube High Definition by Baris Derin

Rated 5 out of 5 stars 186 reviews

298,617 users

YouTube High Definition is a powerful tool that will let you automatically play all YouTube videos in HD (High Definition), turn off annotations, change video player size, auto stop videos, auto mute videos, control embedded videos and much more.

FoxyProxy Standard by Eric H. Jung, groeg, others

Rated 4 out of 5 stars 332 reviews

358,435 users

FoxyProxy is an advanced proxy management tool that completely replaces Firefox's limited proxying capabilities. For a simpler tool and less advanced configuration options, please use FoxyProxy Basic.
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