Greasemonkey Requer reinicialização Em destaque

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

Avaliado em 4 de 5 estrelas (1.059)
1.112.614 usuários

Cisco WebEx Extension Compatível com o Firefox 57 e superior

Participe de reuniões WebEx utilizando o Firefox ™

Avaliado em 3 de 5 estrelas (46)
523.305 usuários

Flashblock Requer reinicialização

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)
438.156 usuários

Mozilla Firefox hotfix

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

Avaliado em 2 de 5 estrelas (14)
373.197 usuários

EPUBReader Requer reinicialização

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

Avaliado em 5 de 5 estrelas (192)
360.738 usuários

Garmin Communicator Requer reinicialização

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)
355.028 usuários

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)
275.488 usuários

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 (1.983)
178.525 usuários

Add-ons Manager Context Menu Requer reinicialização

Add more items to Add-ons Manager context menu.

Avaliado em 5 de 5 estrelas (36)
149.181 usuários


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)
98.108 usuários

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)
95.215 usuários

Translate This!

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

Avaliado em 3 de 5 estrelas (100)
84.167 usuários

Legacy Test Pilot (Outdated)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)
80.144 usuários

Save as PDF Requer reinicialização

Lets you download web pages as PDF in one click.

Avaliado em 2 de 5 estrelas (140)
77.996 usuários

wmlbrowser Requer reinicialização

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

Avaliado em 4 de 5 estrelas (28)
75.660 usuários

LeechBlock Requer reinicialização

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 (664)
73.732 usuários

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)
66.405 usuários

Disable Add-on Compatibility Checks

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

Avaliado em 4 de 5 estrelas (108)
59.610 usuários

PDF Viewer(discontinued)


Avaliado em 4 de 5 estrelas (252)
57.769 usuários

Low Quality Flash Requer reinicialização

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)
54.029 usuários