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

21,476,139 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

1,019,803 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 1,653 reviews

1,320,015 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

1,258,479 users

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

Ghostery by Ghostery

Rated 4 out of 5 stars 1,266 reviews

1,553,557 users

Enjoy a faster, safer and cleaner browsing experience.

NoScript Security Suite by Giorgio Maone

Rated 5 out of 5 stars 1,531 reviews

2,371,394 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.

ZenMate Security & Privacy VPN by ZenMate

Rated 4 out of 5 stars 163 reviews

323,245 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.

Proxy Switcher by rNeomy

Rated 5 out of 5 stars 7 reviews

11,844 users

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

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

Rated 4 out of 5 stars 510 reviews

696,280 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

711,988 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

768,156 users

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

Adblock Plus Pop-up Addon by Jesse Hakanen

Rated 5 out of 5 stars 184 reviews

1,222,673 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

520,978 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

815,885 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

895,110 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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