Easily download most popular video formats.
Tons of features to improve your user experience on YouTube™.
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!
Ghostery Compatible with Firefox 57+ Featured
Increase your browsing privacy, protection, and speed.
QR Code Image Generator Featured
Create a QR code of the selected text, current url or hyperlink. Also possible to create a QR Code from free text within Firefox. Now with UTF8 support.
Pearltrees lets you organize all your interests.
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.
Menu Wizard Requires Restart Featured
Customize menus : Helps removing, moving and renaming menus and menu items
Colorize important menu for ease of use! (use Style (CSS))
Change or disable any of used keyboard shortcuts
Support: Firefox, Thunderbird and SeaMonkey
Strictly block all popup requests from any website by default. A notification window is opened to allow you accept, reject, open the popup in background page, or redirect the current page to popup address
HTTPS Everywhere Requires Restart Featured
Encrypt the web! HTTPS Everywhere is a Firefox extension to protect your communications by enabling HTTPS encryption automatically on sites that are known to support it, even when you type URLs or follow links that omit the https: prefix.
Honey Compatible with Firefox 57+ Featured
Automatically find and try coupon codes with 1-click. Works at thousands of stores in the US, Canada, Australia, India and the UK.
Disconnect Compatible with Firefox 57+ Featured
Make the web faster, more private, and more secure.
Get all CSS styles of selected text
Duplicate Tabs Closer Featured
Detects and automatically closes duplicate tabs.
The entire page will be fading to dark, so you can watch the video as if you were in the cinema.
A free extension of the web tool https://emojikeyboard.org. It helps input emoji in the web browser with an extensive search functionality.
A reference for the codes to generate Emojis on popular sites like GitHub or Basecamp and Unicode characters for Twitter and Facebook.
Search Emojis by name or view recently selected items. Emojis are automatically copied to the clipboard.
A quick and minimalistic way to create bookmarks.
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).