Mozilla Firefox is a free-to-download web browser in direct competition with Internet Explorer. It has won many awards from various computer magazines and is safe and reliable. My favorite feature is the ability of Firefox to locate, download and install the required plugins for a webpage with no hassle. This a definite advantage over IE. Also, having tabs within a window rather than new windows allows for faster moving from one window to another. In my experience it is more adept than IE at blocking unwanted downloads and is marginally more user friendly on the whole.