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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, Tumblr, and many, many other sites. You can even customize Firefox and other programs themselves.

Rated 4 out of 5 stars (818)
23,210 weekly downloads

Easy Access

Allow an easy access to the system commands and other programs in your computer.

Rated 4 out of 5 stars (18)
17,380 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 (2,603)
14,964 weekly downloads

Classic Theme Restorer

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 (1,113)
11,133 weekly downloads

Facebook colors No Restart

Want to change the blue background color of your Facebook ?

Rated 5 out of 5 stars (3)
8,613 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 (928)
8,215 weekly downloads

Personas Plus

Personas (now known as lightweight themes) 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 themes.

Rated 3 out of 5 stars (929)
8,124 weekly downloads

Reddit Enhancement Suite No Restart

NOTE: Reddit Enhancement Suite is developed independently, and is not officially endorsed by or affiliated with reddit.

RES is a suite of tools to enhance your reddit browsing experience.

Rated 5 out of 5 stars (108)
7,317 weekly downloads

Flash Control No Restart

Controls as and when to display the Flash player and the HTML5 player.

Rated 4 out of 5 stars (65)
6,495 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 (173)
5,774 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 (195)
5,024 weekly downloads

Print Edit Featured

Allows editing of web page content while in Print Preview mode, prior to printing or saving as HTML or PDF. Compacts the layout and removes unwanted content such as adverts, sidebars and blank pages. Any element can be formatted, hidden or deleted.

Rated 5 out of 5 stars (295)
4,843 weekly downloads

All-in-One Sidebar

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 (1,419)
4,487 weekly downloads

JavaScript on-off applet

Applet for JavaScript simple On/Off

Rated 3 out of 5 stars (4)
4,305 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 (354)
4,195 weekly downloads

Stop Ads No Restart

Stopads , the new generation ad blocker allows you to navigate serenely on the web without intrusive ads ( pop up, siste under) or tracking.
Stopads effectively blocks all types of advertising on any web pages .

Rated 4 out of 5 stars (31)
3,844 weekly downloads

Zoom Page

Full featured zoom manager with independent page and image zoom modes. Choose from four zoom modes: Default Zoom, Fit-To-Width, Default Zoom + Site Specific or Fit-To-Width + Site Specific. Button style and zoom levels are fully configurable.

Rated 5 out of 5 stars (152)
3,804 weekly downloads

colorPicker No Restart

A very simple extension for learning web page colors. Copy the RGB or Hex color code of any pixel displayed in your browser to the clipboard (in CSS/HTML format). Similar in function to Internet Explorer's color picker.

Rated 5 out of 5 stars (38)
3,677 weekly downloads

Tree Style Tab

Show tabs like a tree.

Rated 4 out of 5 stars (1,350)
3,600 weekly downloads

Turn Off the Lights

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 (275)
3,554 weekly downloads