Featured Extensions

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Instant Translate: Select and Translate Featured

Translation, text-to-speech, transliteration on pages and in the pop-up for 100+ languages.

Rated 4 out of 5 stars (44)
14,168 users

Pearltrees Featured

Pearltrees lets you organize all your interests.

Rated 5 out of 5 stars (249)
17,771 users

Duplicate Tabs Closer Featured

Detects and automatically closes duplicate tabs.

Rated 4 out of 5 stars (48)
6,994 users

Google™ Translator Lite Featured

a powerful tool to translate words or sentences

Rated 4 out of 5 stars (34)
44,241 users

Clear Console Requires Restart Featured

One click to clear your cache, cookies, history, html5/local storage, http logins, all of them or restart your browser with/without notifications.

Rated 4 out of 5 stars (68)
23,620 users

User-Agent Switcher Featured

Quickly and easily switch between popular user-agent strings.

Rated 4 out of 5 stars (35)
63,122 users

Classic Toolbar Buttons Featured

'Classic Toolbar Buttons' add-on restores old toolbar button ui (known from Fx 4-7s small view, Fx 4-12s large view & Tb 5-14) for current Firefox, Thunderbird and Seamonkey versions.

Beta builds on versions page!

Rated 5 out of 5 stars (161)
37,369 users

YouTube™ Flash-HTML5 Featured

Play YouTube™ Videos in Flash or HTML5 Player

Rated 5 out of 5 stars (20)
47,848 users

Beyond Australis Featured

Australis was the code name for the current Firefox theme, it aimed to make a great browser look awesome. Now you can go one step further and also make it feel awesome to use!

Rated 5 out of 5 stars (328)
37,443 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 (208)
238,682 users

NoScript Security Suite Requires Restart Featured

The best security you can get in a web browser!
Allow active content to run only from sites you trust, and protect yourself against XSS and Clickjacking attacks.

Rated 5 out of 5 stars (1,622)
2,143,127 users

Google search link fix Featured

This extension prevents Google and Yandex search pages from modifying search result links when you click them. This is useful when copying links but it also helps privacy by preventing the search engines from recording your clicks.

Rated 5 out of 5 stars (147)
74,379 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)
99,896 users

uMatrix Featured

Point & click to forbid/allow any class of requests made by your browser. Use it to block scripts, iframes, ads, facebook, etc.

Rated 5 out of 5 stars (112)
48,997 users

Weather Underground (Forecast Plus) Featured

Provides local & long range Weather Forecast using Weather Underground

Rated 4 out of 5 stars (15)
13,051 users

Ghostery Featured

Increase your browsing privacy, protection, and speed.

Rated 5 out of 5 stars (1,346)
1,347,033 users

Tab Scope Requires Restart Featured

Preview and navigate tab contents through popup.

Rated 4 out of 5 stars (478)
111,976 users

Private Tab Featured

Adds private tabs.

Rated 5 out of 5 stars (237)
64,118 users

New Tab Override (browser.newtab.url replacement) Featured

This add-on brings back the ability to change the page which is shown when opening a new tab.

Rated 5 out of 5 stars (148)
90,791 users

Tab Reloader (Page Reloader) Featured

An easy-to-use tab reloader with custom reloading time settings for individual tabs

Rated 4 out of 5 stars (15)
4,056 users