Featured Extensions

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Classic Retweet No Restart Featured

Old school retweets for Twitter.

Rated 4 out of 5 stars (25)
3,609 users

Greasemonkey Featured

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

Rated 4 out of 5 stars (942)
1,253,925 users

Pearltrees No Restart Featured

Pearltrees lets you organize all your interests.

Rated 5 out of 5 stars (244)
26,910 users

Fastest Weather Forecast No Restart Featured

Fastest Weather Forecast is the easiest way to check the weather while you browse internet

Rated 4 out of 5 stars (52)
45,057 users

Google™ Translator No Restart Featured

Google™ Translator is a handy multi-language translator built on top of Google Translate. It gives you Google Translate UI feel right on your Firefox toolbar.

Rated 4 out of 5 stars (79)
89,883 users

Lightbeam for Firefox No Restart Featured

Lightbeam is a Firefox add-on that enables you to see the first and third party sites you interact with on the Web. Using interactive visualizations, Lightbeam shows you the relationships between these third parties and the sites you visit.

Rated 4 out of 5 stars (381)
438,388 users

FindBar Tweak No Restart Featured

Everything to make your browser's Find Toolbar a powerful and accessible research tool! Please help me test the newest features and fixes, by installing the latest beta version available in the Development Channel.

Rated 5 out of 5 stars (217)
28,638 users

Multifox No Restart Featured

An extension that allows Firefox to connect to websites using different user names. Simultaneously.

*** Multifox 3.2.1 available *** https://getmultifox.com/


*** Multifox 2 users: try the "Window Mode" (see screenshot below) ***

Rated 4 out of 5 stars (71)
63,603 users

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 (182)
139,861 users

Free Memory No Restart Featured

An add-on to perform free-memory operations without visiting about:memory.

Rated 4 out of 5 stars (37)
26,902 users

The Addon Bar (Restored) No Restart Featured

Gives you a place to put all your add-on buttons without over-crowding the navigation bar.

Rated 5 out of 5 stars (261)
131,697 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 (245)
189,194 users

Clear Console 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 (57)
36,008 users

Capture & Print No Restart Featured

This add-on lets you print a webpage's area easily.

Rated 5 out of 5 stars (45)
49,742 users

Toolbar Buttons Featured

Adds toolbar buttons to the customize toolbar window in several programs including Firefox, Thunderbird and SeaMonkey. Some of the buttons make commonly preformed actions quicker, others add new functionality.

Rated 4 out of 5 stars (317)
141,214 users

SmoothWheel Featured

Scrolls the page smoothly when scrolling the mouse wheel (or keyboard arrows if enabled).

Rated 5 out of 5 stars (242)
48,581 users

Addictive Typing Lessons Featured

Learn touch typing, or improve your typing.

Rated 4 out of 5 stars (23)
12,165 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 (139)
11,298 users

URL Fixer No Restart Featured

URL Fixer fixes common typos in URLs entered in the address bar. It will fix errors like "google.con" or "youtube,com". You have the option of being asked to confirm corrections before they are applied.

Rated 4 out of 5 stars (98)
21,965 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 (140)
40,620 users