Want to change from one language to another? Zing! and the locale is switched.
MonkeyMenu Requires Restart
MonkeyMenu brings some of the features of the MenuX Firefox extension to the Seamonkey browser. You can add about 29 buttons to the Seamonkey user interface, collapse any toolbar, add/remove search engines, have your font zoom size reloaded, and...
tab-counter Requires Restart
shows the number of tabs in the status-bar
Open With Opera sends pages, links, tabs and images from Mozilla Firefox to Opera.
jQuery Requires Restart
jQuery and jQuery UI embedded in browser
Open With for Internet Explorer sends pages from Mozilla Firefox to Internet Explorer.
xSidebar Requires Restart Featured
Firefox style sidebars for SeaMonkey...
HashColouredTabs+ Requires Restart
Improves tab identification by providing a small colored icon for any site which doesn't have its own 'site icon'.
★ 'favicon' now also shown in history and bookmarks ★
YouTube Video Player Pop Out lets you pop out YouTube videos so that you can watch YouTube videos while you surf.
CloseTab Requires Restart
Lightweight add-on which adds to right-click menu 3 items allowing to close current tab, open a new one and reopen closed one. Right-click anywhere on site instead of using keyboard or finding buttons.
Restart Application Button lets you restart your Firefox and SeaMonkey application by a quick toolbar button click.
Hide the caption of Firefox
From/To Column Requires Restart
Add a “From/To” column which shows the recipient if you are the sender.
FAYT Revived Requires Restart
Regain possesion of your good "Find As You Type" search bar in Firefox and SeaMonkey!
printplus Requires Restart
PDF export support by Gecko.
Darkens the background of the page
Stylish Tools Requires Restart
Quicker access to several Stylish features through a toolbar button and/or keyboard shortcuts. Available for Firefox, Thunderbird, and SeaMonkey
A button to be able to open the profile folder, along with two buttons to create profiles, and also switch the current profile.
Reload page without using content stored in the browser cache to make sure you get any updates.
No Alt Text Requires Restart
Changes the default setting for new images to not use alternative text. This also works around a bug in some versions of SeaMonkey Composer and Thunderbird Message Compose whereby the Image Properties dialog would always demand alt text.