Firefox uses the Gecko layout engine to display web pages. Its Android version is also available on the play store. It is available for Windows, Mac, Linux and BSD OS. Because of its extensions, add-ons, and themes, it supports most existing web standards while providing a personalized experience. Mozilla Firefox is one of the most downloaded internet browsers. Firefox is the spiritual successor of Netscape Navigator, as the Mozilla community was created by Netscape in 1998 before their acquisition by AOL. Firefox was released on November 9, 2004, and challenged Internet Explorer’s dominance with 60 million downloads within nine months.