Featured Add-ons

by Mozilla

141 Add-ons in this Collection

Adblock Plus by Wladimir Palant

Rated 5 out of 5 stars 4,193 reviews

18,586,319 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).

Flash Video Downloader - Full HD Download by FVD Media Inc.

Flash Video Downloader helps you to download any video (flv, mp4, HD) from YouTube-like, Facebook, Break, Metacafe and more in one click. You can download mp3, music (iPod), avi and more. Download Flash games. Download Helper.

Download YouTube Videos as MP4 by ialc

Rated 4 out of 5 stars 216 reviews

884,768 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.

NoScript Security Suite by Giorgio Maone

Rated 5 out of 5 stars 1,292 reviews

2,277,865 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.

DownThemAll! by Nils Maier, Federico Parodi, others

Rated 5 out of 5 stars 1,390 reviews

1,647,580 users

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

Ghostery by Felix Shnir, José María Signanini

Rated 5 out of 5 stars 808 reviews

1,122,134 users

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

Youtube Video and Audio Downloader by InBasic

Rated 4 out of 5 stars 118 reviews

509,243 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 out of FLV videos. It optionally downloads subtitles as well!

FlashGot Mass Downloader by Giorgio Maone

Rated 5 out of 5 stars 424 reviews

1,359,792 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 1,300 reviews

1,362,734 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.

Google Translator for Firefox by nobzol

Rated 4 out of 5 stars 227 reviews

683,510 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.

Stylish by Jason Barnabe

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 96 reviews

213,980 users

YouTube High Definition is a powerful tool that will let you play all YouTube videos in High Definition automatically.

Flagfox by Dave G

Rated 5 out of 5 stars 566 reviews

898,177 users

Displays a country flag depicting the location of the current website's server and provides a multitude of tools such as site safety checks, whois, translation, similar sites, validation, URL shortening, and more...

Tab Mix Plus by onemen, Gary Reyes

Rated 4 out of 5 stars 2,129 reviews

1,167,570 users

Tab Mix Plus enhances Firefox's tab browsing capabilities. It includes such features as duplicating tabs, controlling tab focus, tab clicking options, undo closed tabs and windows, plus much more. It also includes a full-featured session manager.
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