Firefox 4, the latest version of Mozilla's free, open-source Web browser, was downloaded around 5 million times in its first 24 hours.
Made to make the Web a better place.
• a new look
• super speed
• even more awesomeness
The latest version of Firefox features full support for emerging coding language HTML 5, tabs for apps, a redesigned user interface and a feature that helps users organize tabs for the websites they visit frequently.
It also includes a "do not track" feature, designed to tell sites you visit that you don't want to be tracked for advertising purposes. The sites still have to comply for it to work.