Featured Add-ons

by Mozilla

151 Add-ons in this Collection

Adblock Plus by Wladimir Palant

Rated 5 out of 5 stars 5,043 reviews

21,535,597 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 385 reviews

1,027,031 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 1,654 reviews

1,329,618 users

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

Greasemonkey by Anthony Lieuallen, Aaron Boodman, others

Rated 4 out of 5 stars 970 reviews

1,264,506 users

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

NoScript Security Suite by Giorgio Maone

Rated 5 out of 5 stars 1,530 reviews

2,372,410 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.

Ghostery by Ghostery

Rated 4 out of 5 stars 1,267 reviews

1,554,444 users

Enjoy a faster, safer and cleaner browsing experience.

ZenMate Security & Privacy VPN by ZenMate

Rated 4 out of 5 stars 164 reviews

322,915 users

Unblock the web and change your IP with 4 locations across the globe. ZenMate secures your browsing with encryption - protecting you from hackers, snoopers and data thieves who prey on unsecure connections.

1-Click YouTube Video Download by The 1-Click YouTube Video Download Team

Rated 4 out of 5 stars 510 reviews

700,876 users

The simplest YouTube Video Downloader for all YouTube Flash sites, period.

YouTube Video and Audio Downloader by InBasic, Alopepeo

Rated 4 out of 5 stars 307 reviews

715,295 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.

LastPass Password Manager by LastPass, Andrew Zitnay

Rated 4 out of 5 stars 1,305 reviews

771,189 users

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

Proxy Switcher by rNeomy

Rated 5 out of 5 stars 7 reviews

9,161 users

Access to the complete Firefox's proxy settings right from a toolbar panel

Adblock Plus Pop-up Addon by Jesse Hakanen

Rated 5 out of 5 stars 183 reviews

1,225,303 users

Adblock Plus Pop-up Addon extends the blocking functionality of Adblock Plus to those annoying pop-up windows that open on mouse clicks and other user actions.

iMacros for Firefox by iMacros

Rated 4 out of 5 stars 391 reviews

511,456 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...

Google Translator for Firefox by nobzol

Rated 4 out of 5 stars 322 reviews

819,375 users

With this addon you can translate any text to your own language with one click or hot-key. You can either translate the selected text, this way the translated text will overwrite the original selected text, or you can translate the full page too.

FlashGot Mass Downloader by Giorgio Maone

Rated 5 out of 5 stars 512 reviews

900,440 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.
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