Over the last couple of years, they have created versions of Mosaic for the X Window System, Windows, and the Macintosh. Mosaic for the Amiga, on the other hand, has no formal link with NCSA, although AMosaic is based on NCSA Mosaic. Of course, Mosaic isn't the only browser available for the Web. A number of others such as Lynx, Cello and ViolaWWW exists on a variety of platforms, but Mosaic is probably the most polished and definately the most widely used. People tend to refer to Mosaic and WWW as though they are the same thing, but this is not the case.
Web browsers are completely independent of the data.
The WWW as developed by CERN can be thought of as just a way of structuring data. NCSA Mosaic is one of many browsers which can read that data, interpret it, and display it on screen. It is essentially a collection of styles used to define the various components of a W3 document. We can have bold text or words in italics . We can put paragraphs at the end of our text.