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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 (866)
88,768 weekly downloads

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 (884)
30,259 weekly downloads

EPUBReader Featured

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

Rated 5 out of 5 stars (134)
24,252 weekly downloads

YouTube Center No Restart

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

Rated 4 out of 5 stars (196)
12,610 weekly downloads

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 (443)
10,373 weekly downloads

PDF Viewer No Restart

PDF.js brings Portable Document Format (PDF) reading capabilities to your browser using web standard technologies.

Please report issues to: https://github.com/mozilla/pdf.js/issues

Rated 4 out of 5 stars (217)
9,107 weekly downloads

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 (39)
7,984 weekly downloads

Image Block Featured

Image Block adds a toggle button that conditionally blocks/allows loading of images on webpages. Blocking images results in faster browsing, especially helpful on handheld devices or slower connections like GSM/GPRS/EDGE dial-up etc.

Rated 4 out of 5 stars (107)
6,655 weekly downloads

Save as PDF

Lets you download web pages as PDF in one click.

Rated 3 out of 5 stars (88)
6,332 weekly downloads

Translate This! No Restart

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

Rated 4 out of 5 stars (62)
5,490 weekly downloads

Memory Fox

Attempting to reduce both Browser and Flash RAM Memory usage. Memory Fox will promote the increase of available RAM memories for other application processes. Hopefully, fostering any attempts of Memory Recovery and Retention.

Rated 4 out of 5 stars (260)
4,766 weekly downloads

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 (416)
4,601 weekly downloads

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 (184)
4,179 weekly downloads

Web2PDF Converter Featured

Web page to PDF conversion tool

Rated 4 out of 5 stars (76)
4,126 weekly downloads

Proxy Selector

Proxy Selector lets you switch local proxies in Firefox.

Rated 4 out of 5 stars (89)
3,734 weekly downloads

ScreenShot Link

Application for creating screenshots and instant uploading them to the server

Rated 5 out of 5 stars (8)
3,640 weekly downloads

Free Memory No Restart Featured

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

Rated 4 out of 5 stars (24)
3,168 weekly downloads

Selenium IDE Button

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 (7)
3,050 weekly downloads

Garmin Communicator

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

Rated 3 out of 5 stars (22)
2,966 weekly downloads

Copy Plain Text 2 Featured

Copies text without formatting

Rated 5 out of 5 stars (40)
2,603 weekly downloads