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...
Gmail™ Notifier (restartless) Featured
Multiple account (or label) Gmail notifier (without storing passwords)
Tab Scope Requires Restart Featured
Preview and navigate tab contents through popup.
QR Code Image Generator Featured
Create a QR Code of the selected text or current URL. Use CTRL-SHIFT-Q to quickly see the QR Code. Also possible to create a QR Code from free text within Firefox. Works completely offline! Now with UTF8 support.
Privacy Settings Featured
Alter Firefox's built-in privacy settings easily with a toolbar panel.
Tool for managing the default action when you click a "mailto:" link. Specializing in sharing details for Webmail services.
Master Password+ Requires Restart Featured
Various enhancements for build-in "master password" (MP)
-Locks master security device on demand or after specified time
-Prompts for MP on browser startup
-Suppresses all or duplicate MP prompts
-Locks up entire application or individual windows
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.
"Dictionary (Google™ Translate) Anywhere" extension provides access to a floating multilingual Google Translate panel on any webpage.
Translation, text-to-speech, transliteration on pages and in the pop-up for 100+ languages.
Smart HTTPS Featured
Automatically changes HTTP addresses to the secure HTTPS, and if loading encounters error, reverts it back to HTTP.
Classic Toolbar Buttons Featured
'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!
Panel View for Google™ Keep Featured
A handy and reliable extension designed to store your notes, lists and photos.
Adblock Plus Featured
Blocks annoying video ads on YouTube, Facebook ads, banners and much more.
Adblock Plus blocks all annoying ads, and supports websites by not blocking unobtrusive ads by default (configurable).
A quick and minimalistic way to create bookmarks.
AdBlocker for YouTube™ removes all annoying Ads from YouTube
Theme Font & Size Changer Featured
Theme Font & Size Changer lets you change the global font size and font family used for the user interface in Firefox. Design your browser with your favorite font.
The first and only download manager/accelerator built inside Firefox!
Tile Tabs Requires Restart Featured
Displays tabs in tiled layouts in Firefox. Arrange tiles horizontally, vertically or in a grid. Resize tiles by dragging splitter bars. Tabs and links can be dragged to open in other tiles. Supports multiple tiled layouts. Works with tab groups.