Mozilla Firefox is the second most popular Internet browser. It is an open browser which is available for free. Today, 30% of total internet users around the world are using Firefox. In Germany, the figure is 60%. Things like private browsing and download manager makes the browser more user-friendly. It also offers private security. Another highlight is Geolocation that helps users in choosing content on the basis of their location. Best feature of Mozilla Firefox is that it works on all the three major operating systems namely Linux, Windows and Mac. Latest version of the Browser is 4.0 edition (Beta) which was released on December 22nd 2010. You can download it from Firefox.com.