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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.
ProfileSwitcher Requer reinicialização
It adds some options to launch easily other profiles and the Profile Manager.
Disable Add-on Compatibility Checks
Reinstates the extensions.checkCompatibility preference without respect to the current application version.
PlayFlash 32bit Requer reinicialização
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.
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.
Dorando keyconfig Requer reinicialização
A modified Dorando's addon to rebind keyboard shortcuts. It is designed to be a drop-in replacement, keeping your old settings. (See details for upgrade instructions.)
As of version 2016.2, Custom keys (using custom JavaScript) work again!
AutoCopy 2 Requer reinicialização
Copia o texto selecionado para a área de transferência automaticamente.
AutoCopy Requer reinicialização
Select text and it's automatically copied to the clipboard. Also pastes on middle click.
Minimize On Start and Close Requer reinicialização
A remake of the MinimizeToTray-extension made to fit the Windows 7 taskbar. Instead of minimize the window to the tray it minimize it to the taskbar. It can minimize on startup, when the window is closed and/or when the esc key is pressed.
AutoProxy-ng Requer reinicialização
This is a fork of AutoProxy, which can run the latest version of Firefox.
PlayFlash 64bit Requer reinicialização
Flash player plugin - unofficial xpi repack for 64bit browsers. Use when official plugin installer is not suitable. All binary files are copyrighted by their authors and distributed for free.
Add-ons Manager Context Menu Requer reinicialização
Add more items to Add-ons Manager context menu.
Diagnostics for Adblock Plus
Diagnostics tool for Adblock Plus, provides some insight into internal processes of Adblock Plus.
Mouse Gestures Suite Requer reinicialização
Mouse gestures for SeaMonkey & Firefox: navigate & execute commands using mouse gestures (with single mouse button) and rocker gestures (by pressing 2 mouse buttons). Also: scroll wheel navigation, page scrolling, tab scrolling.
Copy Plain Text 2 Requer reinicialização
Copia texto selecionado removendo sua formatação.
Addons Manager Hilite
Remembers last selected (hilited) extension/theme/plugin/userstyle in Add-ons Manager. Version 3.0 also includes sorting buttons. Turn off/on the add-on selection list box and/or fine tune behavior via its Options.
MinimizeToTray For FF 3.5 Requer reinicialização
MinimizeToTray For firefox 3.Minimizes Mozilla windows into the system tray.Note:I am going to remove this extension if the original creator make a FF 3 version!
Para criar as suas próprias coleções, você deve ter uma conta no Mozilla Add-ons.