The easy way to download and convert Web videos from hundreds of YouTube-like sites.
The first and only download manager/accelerator built inside Firefox!
The Web Developer extension adds various web developer tools to the browser.
This extension allows you to export your saved passwords and disabled login hosts using XML or CSV files that can be imported later.
Status bar widgets and progress indicators for Firefox 4+
Adds the ability to create and edit entries in the password manager.
TinEye is a reverse image search engine. The plugin adds a context menu item that allows you to search for an image to find out where it came from, how it is being used, if modified versions of the image exist, or to find higher resolution versions.
SenSEO is an extension checking the most important on-page-SEO-criteria and calculating a grade of how good your site fulfills these criteria.
The Ultimate FaceBook Enhancer! Instantly add many tweaks to Facebook.com including: Large Images on Hover, Emotiocons, Select All Friends, Styles, and much more. A must have for Facebook users.
Collections are groups of related add-ons that anyone can create and share.Explore Collections