Featured Extensions

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Reload Plus Featured

Supercharge your reload button and hotkeys!

Rated 5 out of 5 stars (82)
28,094 users

Private Tab Featured

Adds private tabs.

Rated 5 out of 5 stars (238)
65,593 users

Theme Font & Size Changer 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 (180)
103,883 users

Adblock Plus Featured

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).

Rated 5 out of 5 stars (4,954)
19,192,223 users

New Tab Tools Featured

Customizes the new tab page. Add more tiles. Add the launcher from Firefox start. Have a background image. Set new tile images and titles. See recently closed tabs. And more...

Rated 4 out of 5 stars (235)
44,794 users

Smart HTTPS Featured

Automatically changes HTTP addresses to the secure HTTPS, and if loading encounters error, reverts it back to HTTP.

Rated 4 out of 5 stars (25)
37,459 users

SearchWP Requires Restart Featured

Jump-to-word buttons and highlighting for the search box content

Rated 5 out of 5 stars (147)
19,726 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 (436)
1,372,029 users

YouTube™ Control Center Featured

YouTube Control Center is an open-source project that aims to enhance the overall YouTube experience by providing the end user with more control in what the playback process is concerned.

Rated 4 out of 5 stars (59)
13,710 users

CookieKeeper Featured

Extended Cookie Manager - Keep only wanted cookies.

Rated 4 out of 5 stars (66)
14,700 users

Tab notifier Featured

Enables desktop notifications like in Chrome (e.g. Gmail, imo.im) and, if the site doesn't support them, it can notify new messages or updates detecting changes of the title (e.g. Hotmail, Yahoo, Facebook, Twitter). Even if the browser is minimized!

Rated 4 out of 5 stars (49)
4,256 users

Tile Tabs Requires Restart Featured

Displays tabs in tiled layouts in Firefox. Arrange tiles horizontally, vertically or in a grid. Resize tiles by dragging splitter bars. Tabs and links can be dragged to open in other tiles. Supports multiple tiled layouts. Works with tab groups.

Rated 5 out of 5 stars (266)
80,827 users

HTTPS Everywhere Requires Restart Featured

Encrypt the web! HTTPS Everywhere is a Firefox extension to protect your communications by enabling HTTPS encryption automatically on sites that are known to support it, even when you type URLs or follow links that omit the https: prefix.

Rated 4 out of 5 stars (126)
306,913 users

Menu Wizard Requires Restart Featured

Customize menus : Helps removing, moving and renaming menus and menu items
Colorize important menu for ease of use! (use Style (CSS))
Change or disable any of used keyboard shortcuts
Support: Firefox, Thunderbird and SeaMonkey

Rated 5 out of 5 stars (198)
72,710 users

Greasemonkey Requires Restart Featured

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

Rated 4 out of 5 stars (1,017)
1,169,615 users

YouTube No Buffer (Stop Autoplaying) Featured

A bulletproof approach to prevent YouTube from buffering videos

Rated 4 out of 5 stars (22)
14,049 users

OmniSidebar Featured

Bring your bookmarks into view with just a gesture. Move the sidebar across the screen. Open a different sidebar by just clicking its title. And more! Keeps your sidebar simple and quick to access!

Rated 5 out of 5 stars (110)
102,191 users

FireGestures Requires Restart 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 (973)
328,744 users

Keyword Search Featured

Search in the address bar without changing your search engine.

Rated 5 out of 5 stars (90)
8,685 users

Pearltrees Featured

Pearltrees lets you organize all your interests.

Rated 5 out of 5 stars (249)
18,237 users