Sea Fox Requires Restart
Transform SeaMonkey into Firefox 3.x
Duplicate This Tab Requires Restart
This add-on provides the much needed feature update of Tab Duplication to Mozilla Browsers. Features Supported include Duplication of Browser Tabs, Detaching Tabs and Merging All Windows.
Add-on for Thunderbird that replaces the built-in notifications with OS native ones. It supports most Linux Desktop Environments as well as Windows 8.1/10.
MonkeyFix Requires Restart
Fixes up numerous SeaMonkey browser interface issues (eg. adding support for popup ALT attributes), as well as adding some handy features for developers and power users (eg. configure source viewer, work online/offline).
Switch tabs by scrolling with the mouse wheel in the tab bar.
Sort and Search Customization Dialogs Requires Restart
Sort and search for buttons in (any) toolbar customization dialog
SeaMonkey Vertical Tab Bar Requires Restart
Tab bar on the side of the window for SeaMonkey.
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.
Block advertisement and access to adult sites
Tabs Menu Requires Restart
Adds a Tabs menu to the main menu that lets you easily change between tabs.
Stylish-Custom Requires Restart
custom additions to Stylish extension
Firesizer Requires Restart
Allows you to resize the window to specific dimensions.
NOTE: Users of Firefox 29 and above must install "The Addon Bar" extension to use this, as Firesizer uses the add-on bar that has been removed in Firefox 29.
Restores the default image style used for top-level images in previous versions of Firefox.
IE Tab + (FF 8+, 7, 6, 5, 4, 3.6, 3.5, SeaMonkey) Requires Restart
IE Tab + is an enhanced version of IE Tab. It supports FF 3.5 or greater, integrates IE Tab with Adblock Plus in the IE Tab engine, and synchronizes cookies between IE and Firefox. You can easily import settings from the original IE Tab into IE Tab +
Password Tags Requires Restart
Adds metadata and sortable tags to the password manager.
A button to be able to open the profile folder, along with two buttons to create profiles, and also switch the current profile.
Adds buttons to toggle the using the default page colors and fonts, and the page defined colors and fonts.
Keeps track of your browser tab number.
Scriptish Requires Restart
The greatest user script engine on the Internet (a fork of Greasemonkey).
Right Links Requires Restart
This extension allows to open links in new tabs with right-click directly and using “long” left-click.
This is very useful for touchpads on notebooks and for mice without middle button.