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Greasemonkey Featured

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

Rated 4 out of 5 stars (998)
1,203,667 users

Flashblock

Never be annoyed by a Flash animation again! Blocks Flash so it won't get in your way, but if you want to see it, just click on...

Rated 4 out of 5 stars (1,215)
520,150 users

Garmin Communicator

The Garmin Communicator is an internet browser plugin that allows you to easily transfer data between websites and Garmin GPS devices.

Rated 2 out of 5 stars (34)
424,937 users

EPUBReader

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

Rated 5 out of 5 stars (174)
388,015 users

Mozilla Firefox hotfix No Restart

This official add-on enables Firefox to provide quick fixes for selected issues.

Rated 5 out of 5 stars (1)
293,131 users

Session Manager No Restart Featured

Session Manager saves and restores the state of all or some windows - either when you want it or automatically at startup and after crashes. It can also automatically save the state of open windows individually.

Rated 4 out of 5 stars (473)
270,710 users

Toolbar Buttons No Restart 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 (322)
107,574 users

UnMHT No Restart

UnMHT allows you to view MHT (MHTML) web archive format files, and save complete web pages, including text and graphics, into a single MHT file in Firefox/SeaMonkey.

Rated 5 out of 5 stars (225)
87,734 users

Translate This! No Restart

Translate the whole entire page or just a selection using Google Translate.

Rated 4 out of 5 stars (100)
82,937 users

Save as PDF

Lets you download web pages as PDF in one click.

Rated 2 out of 5 stars (127)
81,242 users

PDF Viewer(discontinued) No Restart

THIS ADD-ON IS NO LONGER UPDATED PLEASE USE THE BUILT IN PDF VIEWER.

Rated 4 out of 5 stars (269)
73,233 users

LeechBlock Featured

LeechBlock is a simple productivity tool designed to block those time-wasting sites that can suck the life out of your working day. All you need to do is specify which sites to block and when to block them.

Rated 5 out of 5 stars (602)
73,029 users

wmlbrowser

Simulate WAP browsing by viewing WML (Wireless Markup Language) pages.

Rated 4 out of 5 stars (32)
67,253 users

Hoxx VPN Proxy No Restart

Hoxx VPN Proxy service to unblock blocked websites, hide your location and encrypt your connection. Completely free.

Rated 5 out of 5 stars (741)
63,208 users

Add-on Compatibility Reporter No Restart

Help make Firefox better. The Add-on Compatibility Reporter enables you to report if the Firefox add-ons that you're using are working properly.

Rated 4 out of 5 stars (213)
62,228 users

ProfileSwitcher

It adds some options to launch easily other profiles and the Profile Manager.

Rated 4 out of 5 stars (87)
47,679 users

YouTube Center No Restart

YouTube Center contains all kind of different useful functions which makes your visit on YouTube much more entertaining.

Rated 3 out of 5 stars (305)
45,796 users

Copy Plain Text 2 Featured

Copies text without formatting

Rated 5 out of 5 stars (66)
44,085 users

Secure Login

Secure Login is an extension for Firefox integrated password manager.

Rated 4 out of 5 stars (382)
42,607 users

Low Quality Flash

Sets Flash objects to "Low Quality" to improve performance on slower platforms (i.e. older computers, netbooks, and Firefox Mobile).

Rated 4 out of 5 stars (50)
42,182 users