Speed Dial & Start Page with flexible layout for fast access to sites via visual bookmarks
Open With Opera sends pages, links, tabs and images from Mozilla Firefox to Opera.
SeaTab-X-2 Requires Restart
Adds Firefox-style tab closers into SeaMonkey.
Restores version numbers for all installed add-ons inside Add-on Manager on Firefox, Thunderbird and Seamonkey.
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.
Adds a few buttons to help with page navigation, including Page Top, Page Bottom, Page Down and Page Up.
This extension makes browsing for extensions easier at addons.mozilla.org. It fixes incorrect information about some extensions being not available for SeaMonkey and adds links to the Add-on Converter where needed.
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,
Tategaki Requires Restart
Tategaki allows vertical writing-mode on mail compose window.
Joomla! Admin Requires Restart
Joomla! Admin brings ease & convenience to your computer/workstation, by providing you with a ready-to-use menu options that balms your repetitive work :) Now, Go to the Administrator page or Duplicate the current tab to a new tab/window in a jiffy!!
Adds toolbar buttons for each restartless add-on (including user scripts and plugins) to toggle its enabled state.
printplus Requires Restart
PDF export support by Gecko.
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.
Remember Mismatched Domains Requires Restart
The Remember Mismatched Domains extension for Firefox and Thunderbird adds a "Don't warn me again about this certificate for this domain" checkbox to the Domain Mismatch and Expired Certificate warning windows. When selected the domain...
Blue Essence Seamonkey Theme Requires Restart
Dark navigator theme based on a default Classical theme and now works on Linux :)
WebPG for Mozilla Requires Restart
An extension which provides GnuPG/GPG/PGP related functions to Moizilla Firefox, Thunderbird and Seamonkey
Preview lightweight theme when hover on menuitems in Apply Theme menu.