To try the thousands of add-ons available here, download Mozilla Firefox, a fast, free way to surf the Web!
CloseWelcome to Firefox Add-ons.
Choose from thousands of extra features and styles to make Firefox your own.
CloseAppearance
Sort by:
FireTray Requires Restart
A system tray extension for Linux and Windows, allowing to set up custom icon, hiding to tray instead of closing, display the number of unread messages in mailing applications, and other features ...
Customizations for Adblock Plus
This extension provides various customization options for the Adblock Plus user interface.
Simple Locale Switcher Requires Restart
An easier management of the user interface language
Text2Link Requires Restart
Text2Link is a simple and easy-to-use way to copy the text of a link, or to open URLs and send emails to addresses not marked-up as HTML links.
No need flash plugin on embeded youtube movies
No need flash plugin on embeded youtube movies
Restart Application Button
Restart Application Button lets you restart your Firefox and SeaMonkey application by a quick toolbar button click.
Compact Menu 2 Requires Restart
Add a compact menu button to the navigation toolbar, and hide the menu bar.
Forecastfox Weather Requires Restart
Get international weather forecasts from AccuWeather.com and display them in any toolbar or statusbar with this highly customizable and unobtrusive extension.
Old Default Image Style
Restores the default image style used for top-level images in previous versions of Firefox.
Scriptish Requires Restart
The greatest user script engine on the Internet (a fork of Greasemonkey).
ToggleDocumentColors_ Requires Restart
Adds a toolbar button and keyboard shortcut to switch between the default page colors and user-defined colors.
Firefox shortcut: Control-Shift-C
SeaMonkey shortcut: Control-K
Version Number in Add-ons Manager
[Restartless] [e10s Compatible]
Easily viewable version info in the Add-ons Manager on Firefox/Thunderbird 41.0 - 56.*
Also restores the add-on version number on Firefox/Thunderbird 41.0 - 56.*.
To create your own collections, you must have a Mozilla Add-ons account.