Appearance and Customization
Personas (now known as lightweight themes) are free, easy-to-install "skins" for Firefox. Personas Plus extends that built-in functionality to give you even more control and easier access to new, popular, and your own favorite themes.
Get international weather forecasts from AccuWeather.com and display them in any toolbar or statusbar with this highly customizable and unobtrusive extension.
Now Available for: Firefox, Thunderbird and SeaMonkey!
Customize menus : Helps removing, moving and renaming menus and menu items
Colorize important menu for ease of use! (use Style (CSS))
Change or disable any of used keyboard shortcuts
Support: Firefox, Thunderbird and SeaMonkey
Color your Folder Treeview Icons!
Displays tabs which allows quick navigation between time periods in Lightning calendar. All views of calendar are supported. Color of tab texts can be adjusted.
Allows you to resize the window to specific dimensions.
NOTE: Users of Firefox 29 and above must install "The Addon Bar" extension to use this, as Firesizer uses the add-on bar that has been removed in Firefox 29.
Add toolbar for toggling tags.
An easier management of the user interface language
NoiaButtons No Restart
The 'NoiaButtons' add-on offers cartoonish toolbar button icons (known from Noia themes) for default theme and lightweight themes. Further more lite silver and dark versions of Noia themes are included.
Lightweight Themes Manager No Restart
Manage your installed personas (lightweight themes).
A combined Get/Send-Button and a popup menu with additional functions.
You may want to use it together with the following Add-ons:
* Send Later Button (by me / Alexander Ihrig)
* Send Later (by jikamens)
GNotifier No Restart
Add-on for Firefox and Thunderbird. Replaces built-in notifications with the OS native notifications. It supports most Linux Desktop Environments, Windows 8.1 & 10.
Tab Wheel Scroll No Restart
Switch tabs by scrolling with the mouse wheel in the tab bar.
Hide title bar if window is maximized.
[!] This add-on has been discontinued.
This extension created only for GNOME 3. It can create problems with another DE. However, you can use HTitle at your own risk (need enable "legacy" mode on settings).
Removes the "Local Folders" entry from the folder pane.
Show All Body Parts No Restart
Enable the View | Message Body As | All Body Parts message display mode.
No need flash plugin on embeded youtube movies
Adds colourful icons to buttons and menus