Welcome to SeaMonkey Add-ons.
Add extra features and styles to make SeaMonkey your own.Close
Black background and white text No Restart
Makes black background and white text on every page
Adds Firefox-style tab closers into SeaMonkey.
Search Engine Quick Switcher No Restart
Switch the current search engine on the fly! Press Control + Shift + Down Arrow to switch to the next search engine or Control + Shift + Up Arrow to select the previous one.
Brings back Firefox 3.x Addon Manager
Lightweight Themes Preview for SeaMonkey No Restart
Preview lightweight theme when hover on menuitems in Apply Theme menu.
Duplicate Tab Blocker No Restart
Prevent duplicate tabs. Allow only one tab for a url. If you click a link that is already opened in a tab, then existing tab would be focused instead of opening a new tab. This works even across firefox windows.
Lightweight Themes Manager No Restart
Manage your installed personas (lightweight themes).
Transform SeaMonkey into Firefox 3.x
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).
An easier management of the user interface language
Big Navigation No Restart
Increases the navigation links on the pages
Adds a "Print" option to the Right-Click context menu.
Safe for Amoled No Restart
Darkens the background of the page
Ported version from Firefox to be compatible with Seamonkey 2.
A complete redesign of popular Google services, Google Redesigned changes the appearance of popular Google services.
NiceReader is designed for web reading. You can customize font, color, size, background, specify the elements to read, filiter ad elements, filiter ad strings, automaticaly turn page.
Loop HTML5 Video and Music.
Quicker access to several Stylish features through a toolbar button and/or keyboard shortcuts. Available for Firefox, Thunderbird, and SeaMonkey
Show History Popup No Restart
When you press the middle mouse button or scroll wheel mouse show popup window the history in the url bar and search bar.
Dybutar No Restart
Dynamic creation of bookmark-style toolbar buttons which you can customize.
GNotifier No Restart
Add-on for Firefox and Thunderbird. Integrates Firefox's notifications with the OS's native notification system. It supports most Linux desktops and Windows 8.