Add-ons
Interface Customizations
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Single Key Tab Switch
Requires Restart
Single Key Tab Switch provides configurable single hotkeys for switching tabs, like the 'Single-key shortcuts' feature of the Opera browser.
Password Mask Changer
Changes the mask character used in password fields.
Sea Fox
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).
Text2Link
Requires Restart
Text2Link is a simple and easy-to-use way to copy the text of a link, or to open URLs and send emails to addresses not marked-up as HTML links.
ImageBlock for seamonkey
Requires Restart
Updated version of imageblock by Hemant Vats to work with seamonkey 2.29.
Provides a fast way to disable images in web pages that's usually set by the image manager sub-menu.
Profile Buttons
A button to be able to open the profile folder, along with two buttons to create profiles, and also switch the current profile.
Edit Bookmark Plus
Requires Restart
Resize 'Add Bookmark' Popup / 'Edit This Bookmark' Popup, fixes tree selection bug, option to disable popup auto close & Update Url and/or Name of a bookmark with the Url/Title of current page.
Replacement of OpenBook addon
Zing! Locale Switcher
Want to change from one language to another? Zing! and the locale is switched.
Page Colors & Fonts Buttons
Adds buttons to toggle the using the default page colors and fonts, and the page defined colors and fonts.
Page Navigation Buttons
Adds a few buttons to help with page navigation, including Page Top, Page Bottom, Page Down and Page Up.
All Menus Button
Show all the menus in a single menu button that can be placed anywhere. Also contains replacement buttons for the default menus.
InspectorWidget
Requires Restart
Adds toolbar button and context menus for invoking the DOM Inspector (DOMi) for either chrome or content elements.
lolifox - Fierr MOD
Requires Restart
Replaces the error page with a lolifox appearance with additional features.
KeePass Helper
Requires Restart
Adds a hostname, URL, or email account ID to the application's window name (e.g., that of Firefox or Thunderbird) to make it recognizable to password manager utilities like KeePass.
HTitle (discontinued)
Requires Restart
Hide title bar if window is maximized.
This add-on has been discontinued!
Legacy extensions support will be dropped in Firefox 57. If you interest in CSD on Linux, please track progress on https://bugzilla.mozilla.org/show_bug.cgi?id=1283299.
SeaTab-X-2
Requires Restart
Adds Firefox-style tab closers into SeaMonkey.
True Full Screen in SeaMonkey
This extension enables true full screen mode in SeaMonkey for HTML5 video players, slide-shows, etc. and also for full screen invoked manually with the F11 key.
FlameFox 3 Rebrander
Requires Restart
Rebrand SeaMonkey as Firefox 3 (by 2008WindowsVista and a11RyanC2)
New Tab Button 2
Requires Restart
Provides a new tab button for the navigation toolbar.
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