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Allows users to import bookmarks and organize them into folders. Also offers a toolbar to add into the browser.

The Graphical Search Engine Comparison Tool allows you to perform your own comparisons, and displays the results visually, making it easy to see both the rankings and comparative positions of pages in search engine results. URLs are represented by small circles, and these circles are connected by a line if the page appears in both engines you're testing. Mouse over a circle and the full URL of the page is displayed. Click on it to open the URL in a new browser window.

The Web Developer extension adds a menu and a toolbar to the browser with various web developer tools. It is designed for Firefox, Flock, Mozilla and Seamonkey, and will run on any platform that these browsers support including Windows, Mac OS X and Linux.

Browser independent and allows synchronisation over the Internet. Includes search facility.

del.icio.us is a social bookmarks manager. It allows you to easily add sites you like to your personal collection of links, to categorize those sites with keywords, and to share your collection not only between your own browsers and machines, but also with others.

The Full Page Test loads a complete HTML page including all objects (images, CSS, JavaScripts, RSS, Flash and frames/iframes). It mimics the way a page is loaded in a web browser.

Firebug integrates with Firefox to put a wealth of web development tools at your fingertips while you browse. You can edit, debug, and monitor CSS, HTML, and JavaScript live in any web page.

The Compete Toolbar is a browser tool that helps you benefit from click-sharing by providing a detailed SnapShot of every site you visit.