EHTip Requires Restart
Word translation in tooltip with English⟷Croatian dictionary already incorporated.
If you are the kind of person who likes to have total control over every aspect of your downloads, "Download Status Bar" is the add-on you are looking for.
No Message Pane Sort by Mouse Requires Restart
No Message Pane Sort prevents accidental resorting of the message pane by disabling mouse button clicks on the column headers.
It is still possible to sort messages by ctrl-clicking the header.
Restores version numbers for all installed add-ons inside Add-on Manager on Firefox, Thunderbird and Seamonkey.
Saved Password Editor Requires Restart
Adds the ability to create and edit entries in the password manager.
Fight the text ads! Element Hiding Helper is a companion extension for Adblock Plus meant to make creating element hiding rules easier.
Archive This Requires Restart
Provides keyboard shortcuts for filing messages into nine configurable "favorite" folders using user-defined keys. Also provides a simple filter system with a keyboard shortcut to file the currently selected message(s) into the correct folder.
Add menu commands for replying to multiple messages at the same time.
Sun Cult Requires Restart
Worldwide Sunrise, Sunset, Twilight, Moonrise and Moonset...
Send Later Requires Restart
True "Send Later" functionality to schedule the time for sending an email.
XNote++ Requires Restart
Persistent sticky notes for Thunderbird associated to mails.
This is a port to Thunderbird >= 3 based on XNote 2.1.0 ( https://addons.mozilla.org/en-US/thunderbird/addon/3093 ) with bugfixes and additional features.
MEGAbird Requires Restart
Add MEGA support to Thunderbird's Filelink feature.
Moves the toolbar back above the tabbar.
Nostalgy Requires Restart
Keyboard shortcuts to change folder, move/copy messages, with folder name auto-completion.
ConQuery Requires Restart
Context searching for everyone and URL manipulation tool for advanced users...
MinimizeToTray For FF 3.5 Requires Restart
MinimizeToTray For firefox 3.Minimizes Mozilla windows into the system tray.Note:I am going to remove this extension if the original creator make a FF 3 version!
Nagios Checker Requires Restart
The statusbar indicator of the events from the network monitoring system Nagios.
Copy Plain Text 2 Requires Restart
Copies text without formatting
Remembers last selected (hilited) extension/theme/plugin/userstyle in Add-ons Manager. Version 3.0 also includes sorting buttons. Turn off/on the add-on selection list box and/or fine tune behavior via its Options.
QuickNote Requires Restart
A simple note-taking extension.