User-Agent Switcher Featured
Quickly and easily switch between popular user-agent strings.
Tool for managing the default action when you click a "mailto:" link. Specializing in sharing details for Webmail services.
Tab Groups Featured
Tab Groups are an easy way to organize a lot of tabs. You can visually group related tabs, switch between groups, and quickly search through all of your tabs to switch to a specific one.
Beyond Australis Featured
Australis was the code name for the current Firefox theme, it aimed to make a great browser look awesome. Now you can go one step further and also make it feel awesome to use!
Facebook™ Disconnect Featured
Facebook™ Disconnect is an efficient firewall to disconnect third-party websites from accessing to your Facebook.
Duplicate Tabs Closer Featured
Detects and automatically closes duplicate tabs.
Video Downloader Prime Featured
Easily download most popular video formats.
Gmail™ Notifier + Featured
Gmail™ Notifier Plus alerts you of new email messages. Users can also read or reply to emails, delete or mark them as read, all without having to open a new window.
Webmail Ad Blocker Featured
Expand your email area by blocking and removing ads on the right hand side of the screen when using Gmail, Hotmail, Outlook.com and Yahoo Mail.
Print Edit Requires Restart Featured
Allows editing of web page content while in Print Preview mode, prior to printing or saving as HTML or PDF. Compacts the layout and removes unwanted content such as adverts, sidebars and blank pages. Any element can be formatted, hidden or deleted.
Reader is the ultimate Reader tool for Firefox.
BetterPrivacy-signed Requires Restart Featured
Control a new, trickier kind of cookie, better known as an LSO or Flash cookie. The BetterPrivacy safeguard offers various ways to handle Flash-cookies created by webpages with the help of your Flash plug-in...
YouTube™ Flash-HTML5 Featured
Play YouTube™ Videos in Flash or HTML5 Player
Tab Scope Requires Restart Featured
Preview and navigate tab contents through popup.
YouTube High Definition Featured
YouTube High Definition is a powerful tool that will let you automatically play all YouTube videos in HD (High Definition), turn off annotations, change video player size, auto stop videos, auto mute videos, control embedded videos and much more.
Enhancer for YouTube™ Featured
One of the best extensions for YouTube™. All the features you need to make YouTube™ more awesome!
Font Finder Requires Restart Featured
FontFinder is created for designers, developers and typographers. It allows a user to analyze the font information of any element on a page, copy any piece(s) of that information to the clipboard, and perform inline replacements to test new layouts.
Extended Cookie Manager - Keep only wanted cookies.
New Tab Tools Featured
Customizes the new tab page. Add more tiles. Add the launcher from Firefox start. Have a background image. Set new tile images and titles. See recently closed tabs. And more...