'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!
NewScrollbars (aka NoiaScrollbars) Requires Restart
The "NewScrollbars"-extension replaces default scrollbars of Firefox and Thunderbird with colorized ones (partly) known from "Noia themes".
Address Close Button Requires Restart
Adds a Address Close Button to mail compose window.
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.
Fight the text ads! Element Hiding Helper is a companion extension for Adblock Plus meant to make creating element hiding rules easier.
Sun Cult Requires Restart
Worldwide Sunrise, Sunset, Twilight, Moonrise and Moonset...
Add-ons Manager Context Menu Requires Restart
Add more items to Add-ons Manager context menu.
Moves the toolbar back above the tabbar.
Link Properties Plus Requires Restart
Provides extended link properties: size of linked file, last modified time, etc.
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.
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!
Copy Plain Text 2 Requires Restart
Copies text without formatting
Console² Requires Restart
Addons Quick Search Requires Restart
Type first letters of add-on name to find them in the list or press Ctrl+↑/↓ to switch between add-ons categories.
Additionally remember and restore last selected item in each list.
Important note: This extension will not work in Firefox 57 and above. Providing this functionality in Firefox is no longer possible, the extension is discontinued.
QuickNote Requires Restart
A simple note-taking extension.
Version in Add-on bar Requires Restart
Show the Firefox/Thunderbird version number in the addon bar (formerly called status bar).
Gnome Open Requires Restart
Open your mail attachments directly with your default gnome application.
ONLY for GNOME USERS!
Is Gnome Open still needed? Please read "Developer Comments" below.
"Restart" menu and button, with configurable shortcut key.