MinimizeToTray revived Requires Restart
Minimizes windows into the system tray.
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 ...
globalChrome.css Requires Restart
Provides global user stylesheet.
Provides ability to override UI elements' label, tooltip text, etc.
Simple Locale Switcher Requires Restart
An easier management of the user interface language
Text2Link Requires Restart
Text2Link is a simple and easy-to-use way to copy the text of a link, or to open URLs and send emails to addresses not marked-up as HTML links.
This extension provides various customization options for the Adblock Plus user interface.
Adds icons to buttons and/or menus.
No need flash plugin on embeded youtube movies
ViewAbout Requires Restart
Enables access to various about: dialogs from the View menu.
Custom Buttons Requires Restart
Gives a possibility to create custom toolbarbuttons...
Manage your installed personas (lightweight themes).
Restart Application Button lets you restart your Firefox and SeaMonkey application by a quick toolbar button click.
Compact Menu 2 Requires Restart
Add a compact menu button to the navigation toolbar, and hide the menu bar.
Hide Menubar Requires Restart
Supports to hide Menu Bar automatically, you can press the ALT key to show it temporarily.
Track your shipment Requires Restart
Link to tracking sites. (mainly Japanese companies)
Forecastfox Weather Requires Restart
Get international weather forecasts from AccuWeather.com and display them in any toolbar or statusbar with this highly customizable and unobtrusive extension.
Stylish-Custom Requires Restart
custom additions to Stylish extension
Block advertisement and access to adult sites