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SmoothWheel Featured

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

Rated 5 out of 5 stars (243)
48,151 users

Flash Control No Restart

Controls as and when to display the Flash player and the HTML5 player.

Rated 4 out of 5 stars (33)
45,607 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)
41,051 users

Facebook Disconnect

Stop Facebook from tracking the webpages you go to.

Rated 4 out of 5 stars (52)
40,319 users

Add Bookmark Here ²

Add a menuitem "Add Bookmark Here..." to Bookmarks...

Rated 4 out of 5 stars (288)
40,084 users

FireFTP button

Nothing special just a simple Toolbar button for FireFTP.

Rated 4 out of 5 stars (16)
39,312 users

Restart Button

Restart button for Firefox

Rated 4 out of 5 stars (34)
39,057 users

The Fox, Only Better No Restart Featured

Australis, the new Firefox theme, made a great browser look awesome. And now it will also feel awesome using it!

Rated 5 out of 5 stars (210)
39,043 users

Disable Anti-Adblock

Disables anti-adblocker scripts

Rated 4 out of 5 stars (51)
36,572 users

New Tab King

New Tab King is the premier extension for turning your new tab page into a beacon of productivity and efficiency.

Featuring a todo list, recently closed tabs, most visited pages and more!

Tons of visual customization option too!

Rated 5 out of 5 stars (183)
35,817 users

betterFox - Make browsing experience 15% faster. No Restart

betterFox - Make your browsing experience 15% faster.

Auto next Page
Quick delete button in search form
Floating panel
Website Favicons
Shopping suggestions

Rated 5 out of 5 stars (56)
34,065 users

Linkification

Converts text links into genuine, clickable links...

Rated 4 out of 5 stars (305)
33,246 users

Print/Print Preview

Replace the default "Print" button with the Mozilla Suite style "Print/Print Preview" toolbar button/menu...

Rated 4 out of 5 stars (57)
32,421 users

Firesizer

Allows you to resize the window to specific dimensions.

NOTE: Users of Firefox 29 and above must install "The Addon Bar" extension to use this, as Firesizer uses the add-on bar that has been removed in Firefox 29.

Rated 4 out of 5 stars (123)
32,243 users

Vimperator

Make Firefox look and behave like Vim

Rated 5 out of 5 stars (170)
31,385 users

Yahoo Mail Hide Ad Panel No Restart

Permanently hides the Ads panel on the right side of New Yahoo! Mail, the 'Sponsored' email at the Top, and ads on the Left to give you a full-width Premium email experience for free! The other option, of course is to pay $50 a year to Yahoo! Inc. :)

Rated 5 out of 5 stars (60)
31,197 users

Window and Tab Limiter

This extension will automatically close old windows and tabs so you don't wind up with zillions of old windows open at the same time. NEW FEATURES IN 3.0. Password protection....and 3 modes of operation.

Rated 4 out of 5 stars (51)
30,686 users

Configuration Mania No Restart

More Advanced (hidden) configures

Rated 4 out of 5 stars (93)
28,708 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 (219)
28,477 users

Snap Links

Note from Mozilla: This add-on has been discontinued. Try Snap Links Plus instead.
Snap Links allows users to easily open multiple links in new tabs by drawing a box around them.

Rated 4 out of 5 stars (286)
27,959 users