Mozilla is an open-source web browser which provides excellent support for existing standards and very fast page rendering, in addition to tons of useful features such as tabbed browsing, good email client that includes integrated anti-spam measures, etc.

Compared to its main competitor, the Internet Explorer, Mozilla respects HTML standards much, much more accurately and in many cases, renders the pages faster.

If you really haven't tried Mozilla or any of its variations (such as Netscape 7 , which is based on Mozilla's engine), it is very strongly recommended that you download it right away and try it yourself.