Makes every page to have light text on dark background (exact colors are customizable)
Firefox version is here: https://addons.mozilla.org/firefox/addon/dark-background-light-text/
tab-counter Requires Restart
shows the number of tabs in the status-bar
Hide the caption of Firefox
Restart Application Button lets you restart your Firefox and SeaMonkey application by a quick toolbar button click.
jQuery Requires Restart
jQuery and jQuery UI embedded in browser
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 ★
FAYT Revived Requires Restart
Regain possesion of your good "Find As You Type" search bar in Firefox and SeaMonkey!
CheckBoxMate Lefedor Edition Requires Restart
Check multiple checkboxes by drawing a rectangle around them. FF6 version.
I've made this version since i did need it for use with RTM,
From/To Column Requires Restart
Add a “From/To” column which shows the recipient if you are the sender.
Darkens the background of the page
A button to be able to open the profile folder, along with two buttons to create profiles, and also switch the current profile.
Stylish Tools Requires Restart
Quicker access to several Stylish features through a toolbar button and/or keyboard shortcuts. Available for Firefox, Thunderbird, and SeaMonkey
Key config Requires Restart
This add-on provides configurable keyboard shortcuts for several actions and a dialog to customize them.
All shortcuts can be redefined in Tools -> Key settings
When you press the middle mouse button or scroll wheel mouse show popup window the history in the url bar and search bar.
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.
Adds toolbar buttons for each restartless add-on (including user scripts and plugins) to toggle its enabled state.
MailNews Status Icons Requires Restart
Adds status icons for replied and forwarded messages to SeaMonkey MailNews.
Folder Pane Cell Selection Type Requires Restart
Since 20070806 the MailNews folder pane has switched from its previous cell text selection to the full row selection which the Mozilla Suite used to use.
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.