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Download Flash and Video Requires Restart

Download Flash and Video is a great download helper tool that lets you download Flash games and Flash videos (YouTube, Facebook, Dailymotion, Google Videos and more) with a single click.
The downloader is very easy to use.

Rated 4 out of 5 stars (376)
656,463 users

Search and New Tab by Yahoo

This Add-on sets your default Search to Yahoo, and it brings a fresh look to every new tab page, powered by Yahoo.

Rated 3 out of 5 stars (13)
604,948 users

Legacy Test Pilot (Outdated)

The legacy Test Pilot program has been replaced, and this add-on is no longer useful. If you're interested in testing new features in Firefox please join the new program at https://testpilot.firefox.com

Rated 4 out of 5 stars (71)
601,035 users

Element Hiding Helper for Adblock Plus

Fight the text ads! Element Hiding Helper is a companion extension for Adblock Plus meant to make creating element hiding rules easier.

Rated 5 out of 5 stars (450)
593,589 users

Flashblock Requires Restart

Never be annoyed by a Flash animation again! Blocks Flash so it won't get in your way, but if you want to see it, just click on...

Rated 4 out of 5 stars (1,215)
537,697 users

anonymoX

Easy anonymous web browsing.
– Change your IP-Address and country
– Visit blocked or censored websites.
– Delete cookies, show your public ip, and more

We provide the proxy servers, no external proxies or other programs required

Rated 3 out of 5 stars (291)
530,944 users

IE Tab V2 (Enhanced IE Tab) Requires Restart

Note: If you are encountering the Connecting... problem see instructions below.

The updated, fully supported IE Tab. Embed IE in a Firefox tab. IE Tab Features: FF 4+ support, IE 7-9 compatibility modes, old IE Tab settings import.

Rated 4 out of 5 stars (437)
520,352 users

iMacros for Firefox Featured

Automate Firefox. Record and replay repetitive tasks. If you're tired of manually visiting the same sites, filling out forms, downloading files and extracting data, then iMacros is for you! Save time, effort and money with iMacros browser automation!

Rated 4 out of 5 stars (417)
485,172 users

Flagfox

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...

Rated 5 out of 5 stars (657)
484,229 users

BetterPrivacy-signed Requires Restart Featured

Control a new, trickier kind of cookie, better known as an LSO or Flash cookie. The BetterPrivacy safeguard offers various ways to handle Flash-cookies created by webpages with the help of your Flash plug-in...

Rated 5 out of 5 stars (440)
478,223 users

Web Developer Requires Restart Featured

The Web Developer extension adds various web developer tools to the browser.

Rated 5 out of 5 stars (245)
471,405 users

YouTube mp3

Adds a download button to YouTube. By clicking on it you can download the video as a high quality mp3 file.

Rated 3 out of 5 stars (246)
469,251 users

FireFTP Requires Restart Featured

FireFTP is a free, secure, cross-platform FTP/SFTP client for Mozilla Firefox which provides easy and intuitive access to FTP/SFTP servers.

Check out my new project, FireSSH!

Rated 4 out of 5 stars (969)
462,776 users

Stylish Requires Restart Featured

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

Rated 4 out of 5 stars (821)
456,186 users

Yandex.Bar Requires Restart

Advanced toolbar for Firefox

Rated 2 out of 5 stars (366)
452,504 users

Lightbeam for Firefox Featured

Lightbeam is a Firefox add-on that enables you to see the first and third party sites you interact with on the Web. Using interactive visualizations, Lightbeam shows you the relationships between these third parties and the sites you visit.

Rated 4 out of 5 stars (420)
444,727 users

Garmin Communicator Requires Restart

The Garmin Communicator is an internet browser plugin that allows you to easily transfer data between websites and Garmin GPS devices.

Rated 2 out of 5 stars (35)
428,334 users

Classic Theme Restorer Requires Restart

Squared tabs, appmenu, add-on bar, small button view and many more 'old' features for Firefox 29+ (Windows / MacOSX / Linux).

All builds & changelogs on versions page!

Rated 5 out of 5 stars (1,125)
426,607 users

Adblock Edge

Adblock Edge is a fork of the Adblock Plus version 2.1.2 extension for blocking advertisements on the web, without sponsored ads whitelist.

**This addon has been discontinued**

Rated 5 out of 5 stars (306)
405,435 users

EPUBReader Requires Restart

With EPUBReader you can read ePub files just in Firefox. No additional software needed!

Rated 5 out of 5 stars (174)
402,343 users