Up & Coming Extensions
As of Firefox 33, Venkman *no longer works*, as the APIs which it needs have been removed.
FireTray Requires Restart
A system tray extension for Linux and Windows, allowing to set up custom icon, hiding to tray instead of closing, display the number of unread messages in mailing applications, and other features ...
Mail Redirect Requires Restart
Allow to redirect (a.k.a. "remail") mail messages to other recipients.
DOM Inspector Requires Restart
DOM Inspector is a tool that can be used to inspect and edit the live DOM of any web document or XUL application. The DOM can be navigated using a two-paned window displaying a variety of different views on the document and all nodes within.
ChatZilla ru-RU Requires Restart
Russian translation of ChatZilla
QuickDrag Requires Restart
Extends the function of the drag-and-drop mouse gesture so that it can be used to load URLs, do a web search of selected text on a page, or save an image on a page. The successor to Super DragAndGo.
Sea Fox Requires Restart
Transform SeaMonkey into Firefox 3.x
AutoPager Fixed Requires Restart
AutoPager Fixed is a working version of AutoPager extension for Firefox 36+ (non-E10s mode) to autoload the next page(s) when you scroll pages.
ATTENTION: DISABLE THE ORIGINAL AUTOPAGER ADDON!
QuickPasswords Requires Restart
Retrieve your Passwords the quick way! Never retype or display your secure passwords on screen anymore - put the password where you need it - the login form or the clipboard.
Now also includes SSO change (multi-domain pw) and Backup + Restore.
AutoProxy Requires Restart
Are you concerned about your privacy? Or, are you blocked from some websites by a firewall? And, are you arming yourself with a proxy? In that case, AutoProxy is designed for you! A tool to help you use your proxy automatically & efficiently.
Folderpane Tools Requires Restart
Allows for customization of the folder pane. Accounts can be rearranged and the startup folder can be chosen.
When you press the middle mouse button or scroll wheel mouse show popup window the history in the url bar and search bar.
Smart Near-Infrared Control.
Słowniczek Requires Restart
Adds to context menu web dictonaries: Ling.pl, Dict.pl, Diki.pl, Angool.pl, MegaSłownik, Onet.pl: Tłumacz and Synonimy.pl
Find Image Copies Requires Restart
The Find Image Copies Firefox extension helps you quickly find image copies. Search for image copies straight from the right-click menu in any website.
Tab Clicking Options Requires Restart
Select actions for various clicking events on a tab or the tab...
Orkut Toolbar Requires Restart
Orkut Toolbar helps you to format the text of your posts in the Orkut forums, easily access all common functions of orkut, create and manage custom signatures and insert and view images and flash movies in orkut posts and scraps.
ToggleDocumentColors_ Requires Restart
Adds a toolbar button and keyboard shortcut to switch between the default page colors and user-defined colors.
Firefox shortcut: Control-Shift-C
SeaMonkey shortcut: Control-K
Bitacora Requires Restart
Shows an icon on the status bar when the mouse cursor is over a link to a page you bookmarked or visited before. Update for fcp's addon
Restart Application Button lets you restart your Firefox and SeaMonkey application by a quick toolbar button click.