Featured Add-ons

by Mozilla

158 Add-ons in this Collection

Adblock Plus by Wladimir Palant

Rated 5 out of 5 stars 4,812 reviews

21,644,824 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 314 reviews

997,203 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.

Ghostery by José María Signanini, Brad McDermott

Rated 5 out of 5 stars 1,080 reviews

1,429,129 users

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

DownThemAll! by Nils Maier, Federico Parodi, others

Rated 5 out of 5 stars 1,549 reviews

1,497,304 users

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

YouTube Video and Audio Downloader by InBasic, Alopepeo

Rated 4 out of 5 stars 229 reviews

640,763 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 1,454 reviews

2,287,705 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 933 reviews

1,371,214 users

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

ZenMate Security & Privacy VPN by ZenMate

Rated 4 out of 5 stars 60 reviews

121,833 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.

FlashGot Mass Downloader by Giorgio Maone

Rated 5 out of 5 stars 473 reviews

1,109,473 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 1,539 reviews

1,243,718 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 366 reviews

296,636 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...

Stylish by Jason Barnabe

Rated 4 out of 5 stars 728 reviews

758,619 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.

Download Status Bar by Szalgiris

Rated 5 out of 5 stars 301 reviews

268,163 users

If you are the kind of person who likes to have total control over every aspect of your downloads, "Download Status Bar" is the add-on you are looking for.

YouTube Unblocker by Jaken3rd

Rated 4 out of 5 stars 108 reviews

258,491 users

Watch blocked YouTube videos – YouTube proxy-server, only if needed!

✓ free unblocking of YouTube videos /-search
✓ unblock embedded videos (e.g. Facebook)
✓ unblocking via proxy (no VPN)
✓ fast unblocking + fast streaming (HD)
✓ totally legal
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