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Greasemonkey Requires Restart Featured

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

Rated 4 out of 5 stars (1,008)
60,666 weekly downloads

Hoxx VPN Proxy

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

Rated 5 out of 5 stars (1,053)
32,604 weekly downloads

EPUBReader Requires Restart

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

Rated 5 out of 5 stars (176)
10,271 weekly downloads

Reload Plus Featured

Supercharge your reload button and hotkeys!

Rated 5 out of 5 stars (79)
9,237 weekly downloads

Flashblock Requires Restart

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 (1,219)
8,332 weekly downloads

Session Manager 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 (485)
6,858 weekly downloads

Auto Form Requires Restart

Copy/Paste all fields from a web form in one click.

Rated 3 out of 5 stars (16)
6,428 weekly downloads

Save as PDF Requires Restart

Lets you download web pages as PDF in one click.

Rated 2 out of 5 stars (131)
6,149 weekly downloads

Selenium IDE Button Requires Restart

Just one simple toolbar button to open Selenium IDE. You need to have installed Selenium IDE: http://seleniumhq.org/projects/ide/

Rated 5 out of 5 stars (8)
4,877 weekly downloads

Tampermonkey

Tampermonkey is the world's most popular userscript manager.

Rated 4 out of 5 stars (28)
4,023 weekly downloads

Translate This!

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

Rated 4 out of 5 stars (103)
3,183 weekly downloads

QuickNote Requires Restart

A simple note-taking extension.

Rated 5 out of 5 stars (174)
3,088 weekly downloads

APK Downloader

Download APK files from Google Play Store (Android Market) for free, from your browser.

Rated 4 out of 5 stars (79)
3,002 weekly downloads

UnMHT

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 4 out of 5 stars (229)
2,790 weekly downloads

LeechBlock Requires Restart 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 (618)
2,692 weekly downloads

PDF Mage

Save any page as PDF

Rated 4 out of 5 stars (38)
2,608 weekly downloads

Web2PDF Converter Requires Restart Featured

Web page to PDF conversion tool

Rated 3 out of 5 stars (99)
2,580 weekly downloads

Mozilla Firefox hotfix

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

Rated 2 out of 5 stars (6)
2,519 weekly downloads

Low Quality Flash Requires Restart

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)
2,312 weekly downloads

YouTube Plus

YouTube with more freedom.

Rated 5 out of 5 stars (59)
2,232 weekly downloads