Tool for managing the default action when you click a "mailto:" link. Specializing in sharing details for Webmail services.
Enhancer for YouTube™ Featured
One of the best extensions for YouTube™. All the features you need to make YouTube™ more awesome!
Gmail™ Notifier (restartless) Featured
Multiple account (or label) Gmail notifier (without storing passwords)
History Submenus II Featured
Add sub-menus to History Menu for previous days' history.
Tab Reloader (Page Reloader) Featured
An easy-to-use tab reloader with custom reloading time settings for individual tabs
Tab Scope Requires Restart Featured
Preview and navigate tab contents through popup.
ipFood Requires Restart Featured
Simulate the use of a series of proxy changing at each new connection.
Tab notifier Featured
Enables desktop notifications like in Chrome (e.g. Gmail, imo.im) and, if the site doesn't support them, it can notify new messages or updates detecting changes of the title (e.g. Hotmail, Yahoo, Facebook, Twitter). Even if the browser is minimized!
Messenger & Notifier for Facebook™ Featured
provides an easy access to messenger.com and notifies you of all new messages (via badge icon text)
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.
Smart HTTPS Featured
Automatically changes HTTP addresses to the secure HTTPS, and if loading encounters error, reverts it back to HTTP.
Reload Plus Featured
Supercharge your reload button and hotkeys!
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.
NoScript Security Suite Requires Restart Featured
The best security you can get in a web browser!
Allow active content to run only from sites you trust, and protect yourself against XSS and Clickjacking attacks.
Turbo Download Manager Featured
a download manager with multi-threading support
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).
Download YouTube Videos as MP4 Featured
An extension that adds direct links to download YouTube videos as MP4 and FLV. It has a simple interface and it downloads videos directly from YouTube. The extension integrates with YouTube's interface and adds a download button below the player.
Lightbeam for Firefox Featured
Lightbeam is a Firefox add-on that enables you to see the first and third party sites you interact with on the Web. Using interactive visualizations, Lightbeam shows you the relationships between these third parties and the sites you visit.
Ecosia is a search engine that donates 80% of its surplus income to planting trees. By searching with Ecosia you can help the environment for free.
This extension adds Ecosia.org as the default search engine to your Firefox. Give it a try!