Greasemonkey Reinício necessário Em destaque

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

Avaliado em 4 de 5 estrelas (1 060)
1 089 188 utilizadores

Cisco WebEx Extension Compatível com o Firefox 57+

Join WebEx meetings using Firefox ™

Avaliado em 3 de 5 estrelas (46)
512 533 utilizadores

Flashblock Reinício necessário

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...

Avaliado em 4 de 5 estrelas (1 134)
425 140 utilizadores

Mozilla Firefox hotfix

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

Avaliado em 2 de 5 estrelas (14)
373 938 utilizadores

EPUBReader Reinício necessário

Com o EPUBReader pode ler ficheiros ePub files usando o Firefox. Não é necessário qualquer programa adicional!

Avaliado em 5 de 5 estrelas (192)
350 565 utilizadores

Garmin Communicator Reinício necessário

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

Avaliado em 2 de 5 estrelas (38)
338 449 utilizadores

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.

Avaliado em 4 de 5 estrelas (460)
269 719 utilizadores

Hoxx VPN Proxy

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

Avaliado em 5 de 5 estrelas (2 036)
179 850 utilizadores

Add-ons Manager Context Menu Reinício necessário

Add more items to Add-ons Manager context menu.

Avaliado em 5 de 5 estrelas (36)
151 424 utilizadores

wmlbrowser Reinício necessário

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

Avaliado em 4 de 5 estrelas (28)
96 818 utilizadores


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.

Avaliado em 4 de 5 estrelas (234)
96 426 utilizadores

Toolbar Buttons

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.

Avaliado em 4 de 5 estrelas (312)
92 203 utilizadores

Translate This!

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

Avaliado em 3 de 5 estrelas (100)
82 141 utilizadores

Disable Add-on Compatibility Checks

Reinstates the extensions.checkCompatibility preference without respect to the current application version.

Avaliado em 4 de 5 estrelas (108)
81 810 utilizadores

Legacy Test Pilot (Outdated)

The legacy Test Pilot program has been replaced, and this add-on is no longer useful. If you're interested in testing new features in Firefox please join the new program at https://testpilot.firefox.com

Avaliado em 4 de 5 estrelas (71)
76 989 utilizadores

Save as PDF Reinício necessário

Lets you download web pages as PDF in one click.

Avaliado em 2 de 5 estrelas (140)
75 629 utilizadores

LeechBlock Reinício necessário

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.

Avaliado em 5 de 5 estrelas (665)
71 794 utilizadores

Add-on Compatibility Reporter

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.

Avaliado em 4 de 5 estrelas (188)
64 655 utilizadores

PDF Viewer(discontinued)


Avaliado em 4 de 5 estrelas (252)
55 265 utilizadores

Low Quality Flash Reinício necessário

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

Avaliado em 4 de 5 estrelas (44)
53 998 utilizadores