 Netscape was discontinued and support for all Netscape browsers and client products was terminated on March 1, 2008.Netscape Navigator was the name of Netscape's web browser from versions 1.0 through 4.8.The first version of the browser was released in 1994, known as Mosaic and then Mosaic Netscape until a legal challenge from the National Center for Supercomputing Applications (makers of NCSA Mosaic, which many of Netscape's founders had spent time developing) which led to the name change to Netscape Navigator.