Mozilla Firefox is a fast, full-featured browser for Windows that makes browsing more efficient than ever before. Firefox includes popup blocking; a tab-browsing mode that lets you open several pages in a single window; integrated Google searching; simplified privacy controls that let you cover your tracks more effectively; a streamlined browser window that shows you more of the page than any other browser; and a number of additional features that work with you to help you get the most out of your time online.