Featured Extensions

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Video WithOut Flash No Restart Featured

Watch videos without flash

Rated 4 out of 5 stars (47)
60,214 users

Classic Toolbar Buttons No Restart 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 on Windows.

Beta builds on versions page!

Rated 5 out of 5 stars (139)
43,288 users

S3.Google Translator Featured

S3.Google Translator adds the power of Google Translate’s automatic translations to your browser!
It supports translation of selected text, entered phrase or whole webpage between any of 80+ languages.

New Feature: Language learning!

Rated 5 out of 5 stars (170)
233,379 users

Flagfox No Restart Featured

Displays a country flag depicting the location of the current website's server and provides a multitude of tools such as site safety checks, whois, translation, similar sites, validation, URL shortening, and more...

Rated 5 out of 5 stars (621)
740,174 users

Undo Closed Tabs Button Featured

Tired of going to History -> Recently Closed Tabs just to undo a closed tab? Then this extension is for you!

This extension allows you to undo closed tabs via a toolbar button or the right-click context menu.

Rated 4 out of 5 stars (350)
58,965 users

Super Start Featured

Just another speed dial extension. Fast and easy to use.

Rated 4 out of 5 stars (399)
105,701 users

EPUBReader Featured

With EPUBReader you can read ePub files just in Firefox. No additional software needed!

Rated 5 out of 5 stars (156)
490,470 users

Greasemonkey Featured

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

Rated 4 out of 5 stars (941)
1,377,048 users

Reader No Restart Featured

Reader is the ultimate Reader tool for Firefox.

Rated 5 out of 5 stars (47)
36,058 users

YouTube ALL HTML5 No Restart Featured

Play all videos on youtube without flash in your preferred size using only HTML5.

Rated 5 out of 5 stars (111)
109,020 users

Password Tags Featured

Adds metadata and sortable tags to the password manager.

Rated 5 out of 5 stars (5)
3,186 users

Wired-Marker Featured

Wired-Marker(http://www.wired-marker.org/en/) is a permanent (indelible) highlighter that you use on Web pages. The highlighter, which comes in various colors and styles, is a kind of electronic bookmark that serves as a guide when you revisit a Web ...

Rated 4 out of 5 stars (137)
12,356 users

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 (2,482)
1,047,007 users

LastPass Password Manager Featured

LastPass, an award-winning password manager, saves your passwords and gives you secure access from every computer and mobile device.

Rated 4 out of 5 stars (1,184)
348,809 users

Cleanest Addon Manager No Restart Featured

Cleanup your Addon Manager

Rated 5 out of 5 stars (121)
27,595 users

Tab Scope Featured

Preview and navigate tab contents through popup.

Rated 4 out of 5 stars (445)
198,248 users

FlashGot Mass Downloader Featured

Download all the links, movies and audio clips of a page at the maximum speed with a single click, using the most popular, lightweight and reliable external download managers.

Rated 5 out of 5 stars (478)
1,123,269 users

Mozilla Archive Format, with MHT and Faithful Save Featured

— Open web pages saved with Internet Explorer or other browsers (MHT)
— Save many tabs, video and audio reliably, in a single ZIP file (MAFF)
— Return to the original site you saved a page from, and more!

Rated 4 out of 5 stars (242)
209,092 users

Quick Translator Featured

The most lightweight and easiest translator. Translate between more than 80 languages with one click or a hot key. Translate from one word to a whole page.

Rated 5 out of 5 stars (453)
271,288 users

TinyURL Generator Featured

An extension to silently generate a TinyURL for your current page at the click of a button. Also shows you where TinyURLs on the web will take you.

Rated 5 out of 5 stars (72)
26,102 users