Sort and Search Customization Dialogs Requires Restart
Sort and search for buttons in (any) toolbar customization dialog
Enhanced Priority Display Requires Restart
Enhanced thread pane display of message priorities.
Add Search Engines for SeaMonkey Requires Restart
Add missing search-engine detection to SeaMonkey
Sync engine for Stylish with backup / restore facility.
Restores the default image style used for top-level images in previous versions of Firefox.
This extension provides various customization options for the Adblock Plus user interface.
'Classic Toolbar Buttons' add-on restores old toolbar button ui (known from Fx 4-7s small view, Fx 4-12s large view & Tb 5-14) for current Firefox, Thunderbird and Seamonkey versions.
Beta builds on versions page!
Link Status Redux Requires Restart
Shows an indicator on the status bar in front of the link address when the mouse cursor is over a link to a page you have bookmarked or visited before.
Changes the mask character used in password fields.
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
Adds toolbar buttons for each restartless add-on (including user scripts and plugins) to toggle its enabled state.
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,
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.
SM Home Button Requires Restart
Navigation bar Home Button (resurrected by sailfish)
Edit Custom Size Image Requires Restart
Fixes a bug in SeaMonkey Composer and Thunderbird Message Compose whereby the Image Properties dialog would always reset the image to actual size.
MailNews Status Icons Requires Restart
Adds status icons for replied and forwarded messages to SeaMonkey MailNews.
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
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.
The Add-ons Manager slims down!
This add-on reduces the height of entries in the Add-on Manager, so you can display more of them at a time.