Gmail™ Notifier (restartless) Featured
Multiple account (or label) Gmail notifier (without storing passwords)
The entire page will be fading to dark, so you can watch the video as if you were in the cinema.
Pick & Save Images Featured
Here's a handy and powerful image saving tool for you to pick and save your favorite images in page! With thumbnail mapping, preference profiles, image filtering, and lots of flexible preferences & features!
Bring your bookmarks into view with just a gesture. Move the sidebar across the screen. Open a different sidebar by just clicking its title. And more! Keeps your sidebar simple and quick to access!
iMacros for Firefox Featured
Automate Firefox. Record and replay repetitive tasks. If you're tired of manually visiting the same sites, filling out forms, downloading files and extracting data, then iMacros is for you! Save time, effort and money with iMacros browser automation!
Prevent Tab Overflow Featured
Make sure your tabs stay visible all the time.
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!
This add-on brings back the ability to change the page which is shown when opening a new tab.
One of the best extensions for YouTube™. All the features you need to make YouTube™ more awesome!
Keyword Search Featured
Search in the address bar without changing your search engine.
Bluhell Firewall Featured
Get a faster browsing experience by blocking nasty web resources using Bluhell Firewall, the lightweight Ad-Blocker and Tracking/Privacy Protector.
Turbo Download Manager Featured
a download manager with multi-threading support
User-Agent Switcher Featured
Quickly and easily switch between popular user-agent strings.
Get all CSS styles of selected text
Shut down the lights on YouTube.
FoxyProxy Standard Requires Restart Featured
FoxyProxy is an advanced proxy management tool that completely replaces Firefox's limited proxying capabilities. For a simpler tool and less advanced configuration options, please use FoxyProxy Basic.
Smart HTTPS Featured
Automatically changes HTTP addresses to the secure HTTPS, and if loading encounters error, reverts it back to HTTP.
An easy-to-use tab reloader with custom reloading time settings for individual tabs
Short, Vim-style keyboard shortcuts for browsing and navigation, for a near mouseless experience.
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.