Greasemonkey Em destaque

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

Avaliado em 4 de 5 estrelas (957)
1.260.853 usuários


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 (1.168)
730.292 usuários


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

Avaliado em 5 de 5 estrelas (164)
438.903 usuários

Garmin Communicator

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

Avaliado em 3 de 5 estrelas (26)
389.334 usuários

Session Manager Não precisa reiniciar Em destaque

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 (567)
283.506 usuários

Mozilla Firefox hotfix Não precisa reiniciar

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

Avaliado em 5 de 5 estrelas (1)
229.886 usuários

Toolbar Buttons Não precisa reiniciar Em destaque

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 (313)
132.330 usuários

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.

Avaliado em 4 de 5 estrelas (328)
121.022 usuários

PDF Viewer Não precisa reiniciar

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

Avaliado em 4 de 5 estrelas (266)
114.491 usuários


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

Avaliado em 4 de 5 estrelas (31)
89.786 usuários

Translate This! Não precisa reiniciar

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

Avaliado em 4 de 5 estrelas (91)
84.907 usuários

UnMHT Não precisa reiniciar

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 5 de 5 estrelas (217)
84.092 usuários

Add-on Compatibility Reporter Não precisa reiniciar

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 (213)
81.338 usuários

LeechBlock Em destaque

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 (522)
79.426 usuários

Save as PDF

Lets you download web pages as PDF in one click.

Avaliado em 3 de 5 estrelas (110)
78.917 usuários

YouTube Center Não precisa reiniciar

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

Avaliado em 3 de 5 estrelas (282)
72.254 usuários

Image Block Em destaque

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.

Avaliado em 4 de 5 estrelas (132)
53.361 usuários

Secure Login

Secure Login is an extension for Firefox integrated password manager.

Avaliado em 4 de 5 estrelas (373)
52.462 usuários

Low Quality Flash

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 (50)
50.288 usuários

Proxy Selector

Proxy Selector lets you switch local proxies in Firefox.

Avaliado em 4 de 5 estrelas (105)
48.184 usuários