http://www.microsoft.com/windows/ie/default.htm
Internet Explorer is an excellent browser for the all versions of
the Windows platform, and is also available for Macintosh. Microsoft
now has several different versions of Internet Explorer-all free.
Keep in mind that the different versions are specific to each platform,
and each has its own features.
http://home.netscape.com/computing/download/index.html
Netscape Navigator is a well known browser that does a great job of
integrating audio, video, 3-D, and animation. A reason for Navigator's
popularity is its ability to successfully develop its browser across
all platforms.