Top-Rated Extensions

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PrefBar Requires Restart

The all in one toolbar(item). Houses and manages bigger amounts of buttons (Clear Cache, Clear Cookies, ...), Menus (User Agent spoof...) and checkboxes (Javascript, Flash, ...). Extensible from online-database or with self created buttons.

Rated 5 out of 5 stars (41)
21,884 users

Irvine ContextMenu Requires Restart

Downloads links and images with Irvine.

Rated 5 out of 5 stars (25)
5,507 users

Version in Add-on bar Requires Restart

Show the Firefox/Thunderbird version number in the addon bar (formerly called status bar).

Rated 5 out of 5 stars (10)
767 users

AntyŚledzik - Skasuj śledzika z NK Requires Restart

AntyŚledzik jest dodatkiem usuwającym Śledzika KOMPLETNIE z naszej-klasy.pl. Poza kasowaniem boxa ze strony głównej kasuje także linki w menu oraz na stronie profilu.

Rated 5 out of 5 stars (10)
18 users

NAMFox Requires Restart

Neoseeker Automated Markup - A Firefox Add-On for Neoseeker.com Users

Rated 5 out of 5 stars (10)
23 users

UltraFM

Ultra radio player (radioultra.ru).

Rated 5 out of 5 stars (12)
321 users

Reduza Preços em lojas Online

Instale o Reduza em seu Firefox e reduza preços na Black Friday com apenas 1 clique, rápido e fácil. Faça como milhares de usuários em todo o Brasil e não perca mais tempo e dinheiro. Funciona com Submarino, Americanas, Netshoes e mais de 100 lojas.

Rated 5 out of 5 stars (12)
485 users

YouTube Video Center

Youtube Video Center changes the new Youtube design and centers the whole Youtube page on the screen automatically.

Rated 5 out of 5 stars (12)
4,663 users

Developer Edition theme enabler

**/!\ This theme is already built-in Firefox 53 and over /!\**
Enables the DevEdition theme on beta or release, and adds an entry in the Appearance's tab. Uninstalling this add-on removes the DevEdition theme from the add-on manager.

Rated 5 out of 5 stars (50)
10,303 users

JSON-DataView Requires Restart

Displays JSON data in a collapsible tree structure with syntax highlights.

Rated 5 out of 5 stars (12)
1,769 users

Drag-Select Link Text

Select link text with easy mouse gestures.

Rated 5 out of 5 stars (34)
1,344 users

Keyword Search Featured

Search in the address bar without changing your search engine.

Rated 5 out of 5 stars (91)
8,364 users

Ageless for YouTube

Watch age restricted YouTube videos without signing in.

Rated 5 out of 5 stars (50)
11,859 users

Star-Button In Urlbar Requires Restart

Moves star-button back into urlbar.
Make sure to have a bookmarks button replacement installed for still being able to access bookmarks menu. 'Classic Bookmarks Button' or 'Classic Theme Restorer' will do the job.

Rated 5 out of 5 stars (34)
2,596 users

QuickJava Requires Restart Featured

Allows quick enable and disable of Java, Javascript, Cookies, Image Animations, Flash, Silverlight, Images, Stylesheets and Proxy from the Toolbar. This is great for increasing security or decreasing bandwidth.

Rated 5 out of 5 stars (210)
237,380 users

FlashStopper

Stops video autoplay and shows the preview thumbnail.

Rated 5 out of 5 stars (87)
52,438 users

Twitter App

Twitter App brings Twitter right into your Firefox Sidebar.

Rated 5 out of 5 stars (18)
12,163 users

Cards Requires Restart

A collection of patience (i.e. single-player) card games. Included are: Aces Up, Black Widow, Canfield, Demon, Double Klondike, Double Solitaire, Grounds for Divorce, Fan, Forty Thieves, FreeCell, Golf, Gypsy, Klondike, Maze, Mod 3, Montana...

Rated 5 out of 5 stars (65)
359 users

Media Keys

Lets you control various media sites using the media keys on your keyboard without having the Firefox window active.

Supported Sites: youtube, pandora, spotify, bandcamp, google play, yandex, soundcloud, tidalhifi, deezer, plex, vk and more.

Rated 5 out of 5 stars (68)
2,622 users

Советник Яндекс.Маркета

Находит нужные вам товары и услуги по более выгодной цене

Rated 5 out of 5 stars (15)
17,620 users