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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 (1,023)
60,610 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 (1,672)
52,400 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 (191)
11,160 weekly downloads

Tampermonkey

Tampermonkey is the world's most popular userscript manager.

Rated 4 out of 5 stars (43)
9,316 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 (1,229)
8,853 weekly downloads

Multifox Toolbar Button Requires Restart

A Firefox toolbar button that opens a new Multifox identity profile. Requires Multifox extension (1.3.4+) (http://br.mozdev.org/multifox).

Rated 3 out of 5 stars (25)
8,828 weekly downloads

Session Manager

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 (509)
7,233 weekly downloads

Save as PDF Requires Restart

Lets you download web pages as PDF in one click.

Rated 2 out of 5 stars (145)
6,386 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)
5,840 weekly downloads

Reload Plus Featured

Supercharge your reload button and hotkeys!

Rated 5 out of 5 stars (84)
4,997 weekly downloads

QuickNote Requires Restart

A simple note-taking extension.

Rated 5 out of 5 stars (179)
4,154 weekly downloads

Translate This!

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

Rated 4 out of 5 stars (108)
4,138 weekly downloads

Cisco WebEx Extension

Join WebEx meetings using Firefox ™

Rated 2 out of 5 stars (14)
3,599 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 (236)
3,298 weekly downloads

Auto Form Requires Restart

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

Rated 3 out of 5 stars (17)
3,152 weekly downloads

PDF Mage

Save any page as PDF

Rated 4 out of 5 stars (54)
2,971 weekly downloads

YouTube Plus

YouTube with more freedom.

Rated 5 out of 5 stars (77)
2,941 weekly downloads

Enable Right Click and Copy

Enable selecting, copying and right clicking on pages that restrict them.

Rated 4 out of 5 stars (24)
2,809 weekly downloads

PlayFlash 32bit Requires Restart

Flash player plugin - unofficial xpi repack for 32bit browsers.
Use when official plugin installer is not suitable.
All binary files are copyrighted by their authors and distributed for free.

Rated 5 out of 5 stars (20)
2,774 weekly downloads

LeechBlock Requires Restart

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 (671)
2,725 weekly downloads