Appearance and Customization

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Forecastfox (fix version)

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!

Rated 5 out of 5 stars (132)
27,328 weekly downloads

Menu Wizard

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

Rated 5 out of 5 stars (114)
1,942 weekly downloads

HTitle

Hide title bar if window is maximized.

This extension created only for GNOME 3. It can create problems with another DE (KDE, XFCE, etc). However, you can use HTitle at your own risk (need enable "legacy" mode on settings page).

Rated 5 out of 5 stars (88)
1,772 weekly downloads

Lightweight Themes Manager No Restart

Manage your installed personas (lightweight themes).

Rated 5 out of 5 stars (6)
1,472 weekly downloads

All Menus Button No Restart

Show all the menus in a single menu button that can be placed anywhere. Also contains replacement buttons for the default menus.

Rated 5 out of 5 stars (4)
1,171 weekly downloads

Firesizer

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.

Rated 4 out of 5 stars (124)
1,119 weekly downloads

Simple Locale Switcher

An easier management of the user interface language

Rated 5 out of 5 stars (7)
975 weekly downloads

Noia Fox options

Options manager and fixes for Noia Fox theme 3.x.x

Rated 5 out of 5 stars (13)
949 weekly downloads

Lightning Calendar Tabs

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.

Rated 4 out of 5 stars (7)
891 weekly downloads

GNotifier No Restart

Add-on for Firefox and Thunderbird. Integrates Firefox's notifications with the OS's native notification system. It supports most Linux desktops and Windows 8.

Rated 5 out of 5 stars (42)
720 weekly downloads

Color Folders

Color your Folder Treeview Icons!

Rated 4 out of 5 stars (121)
645 weekly downloads

Simple Timer

A timer/clock residing in the toolbar.

Rated 5 out of 5 stars (106)
520 weekly downloads

Color Transform No Restart

Adapt page colors to your taste or need. Save your favorite color scheme for automatic coloration. Comes with 18 predefined themes and 24 basic transforms for hue, saturation, lightness and opacity. For Firefox 24.0 and above.

Rated 3 out of 5 stars (9)
321 weekly downloads

Add-ons Manager - Version Number No Restart

Restores add-on version number inside Add-on Manager for latest builds of Firefox, Thunderbird and Seamonkey.

Rated 5 out of 5 stars (4)
304 weekly downloads

about:config Button No Restart

Open about:config to change hidden settings that cannot be edited from the Options window. All Mozilla based programs have settings that can not be changed in the options window.

Not yet rated
293 weekly downloads

Extra Format Buttons

Adds a font size (in pixels), strikethough, subscript and superscript buttons to Thunderbird's Compose Window.

Rated 5 out of 5 stars (5)
292 weekly downloads

OutlookAlike BETA

Makes Thunderbird looking like Outlook.

Rated 4 out of 5 stars (25)
266 weekly downloads

Hide Local Folders

Removes the "Local Folders" entry from the folder pane.

Rated 4 out of 5 stars (19)
259 weekly downloads

Tag Toolbar

Add toolbar for toggling tags.

Rated 4 out of 5 stars (35)
239 weekly downloads

Element Inspector No Restart

Shift-RightClick any element to open it in DOM Inspector.

Rated 5 out of 5 stars (26)
238 weekly downloads