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Stylish Featured

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.

Rated 4 out of 5 stars (616)
45,256 weekly downloads

Classic Theme Restorer (Customize Australis)

Restore squared tabs, appmenu, add-ons bar, small button view and more for Firefox 29+ (Windows/MacOSX/Linux).

All beta builds & changelogs can be found on versions page!

Rated 5 out of 5 stars (607)
28,504 weekly downloads

Tab Mix Plus Featured

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.

Rated 4 out of 5 stars (2,177)
24,684 weekly downloads

Reddit Enhancement Suite No Restart

A suite of tools to enhance Reddit

Rated 5 out of 5 stars (68)
22,939 weekly downloads

FireGestures Featured

A customizable mouse gestures extension which enables to execute various commands and user scripts with six types of gestures.

Rated 4 out of 5 stars (733)
15,730 weekly downloads

Print pages to Pdf Featured

Creates one Pdf from any amount of open Browsertabs,Bookmarks/-folder, Scrapbook(Plus) pages. This document can be archived, sended by e-mail or printed out with any standard Pdf Viewer.

Rated 5 out of 5 stars (190)
13,210 weekly downloads

Webmail Ad Blocker No Restart Featured

Expand your email area by blocking and removing ads on the right hand side of the screen when using Gmail, Hotmail, Outlook.com and Yahoo Mail.

Rated 4 out of 5 stars (151)
12,891 weekly downloads

Personas Plus

Personas are free, easy-to-install "skins" for Firefox. Personas Plus extends that built-in functionality to give you even more control and easier access to new, popular, and your own favorite Personas.

Rated 3 out of 5 stars (882)
12,493 weekly downloads

Updated Ad Blocker for Firefox 11+

It blocks ads on the web pages you visit including Youtube, Hulu, TwitchTV/JustinTV, most Major News Sites(cnn/fox/nbc/msnbc) and many more. Ads from services like Google AdSense Yahoo DoubleClick It also blocks the GoogleAnalytics tracking script.

Rated 3 out of 5 stars (41)
10,097 weekly downloads

All-in-One Sidebar Featured

AiOS lets you open various windows as sidebar panels, and quickly switch between them. So it put an end to the window chaos! In addition to bookmarks and history it opens dialogues such as downloads, add-ons and more in the sidebar.

Rated 5 out of 5 stars (1,263)
9,329 weekly downloads

The Addon Bar (Restored) No Restart

Gives you a place to put all your add-on buttons without over-crowding the navigation bar.

Rated 5 out of 5 stars (184)
8,697 weekly downloads

Turn Off the Lights Featured

The entire page will be fading to dark, so you can watch the video as if you were in the cinema.

Rated 5 out of 5 stars (183)
8,136 weekly downloads

MeasureIt

Draw a ruler across any webpage to check the width, height, or alignment of page elements in pixels.

Rated 4 out of 5 stars (305)
6,963 weekly downloads

YouTube Flash to HTML5 No Restart

Converts YouTube flash videos to HTML5.
UPD: it seems that youtube player has been fixed, and this plugin is not needed anymore.

Rated 4 out of 5 stars (39)
6,744 weekly downloads

Theme Font & Size Changer No Restart Featured

Theme Font & Size Changer lets you change the global font size and font family used for the user interface in Firefox. Design your browser with your favorite font.

Rated 5 out of 5 stars (120)
6,349 weekly downloads

Status-4-Evar Featured

Status bar widgets and progress indicators for Firefox 4+

Rated 5 out of 5 stars (444)
5,706 weekly downloads

MinimizeToTray revived

Minimizes windows into the system tray.

Rated 5 out of 5 stars (241)
5,702 weekly downloads

betterFox - Make browsing experience 15% faster. No Restart

betterFox - Make your browsing experience 15% faster.

Auto next Page
Quick delete button in search form
Floating panel
Website Favicons
Shopping suggestions

Rated 4 out of 5 stars (30)
5,241 weekly downloads

NoSquint Featured

NoSquint allows you to adjust the text-only and full-page (both text and images) zoom levels as well as color settings both globally (for all sites) and per site.

Rated 5 out of 5 stars (397)
5,144 weekly downloads

Flash Control No Restart

Controls as and when to display the Flash player.

Rated 4 out of 5 stars (11)
5,064 weekly downloads