Netscape Navigator is a proprietary web browser that was popular in the 1990s. It was the flagship product of the Netscape Communications Corporation and the dominant web browser in terms of usage share, although by 2002 its usage had almost disappeared. This was primarily due to the increased usage of Microsoft's Internet Explorer web browser software, and partly because the Netscape Corporation (later purchased by AOL) did not sustain Netscape Navigator's technical innovation after the late 1990s.
The business demise of Netscape was a central premise of Microsoft's antitrust trial, wherein the Court ruled that Microsoft Corporation's bundling of Internet Explorer with the Windows operating system was a monopolistic and illegal business practice. The decision came too late for Netscape however, as Internet Explorer had by then become the de-facto web browser in Windows.
The Netscape Navigator web browser was succeeded by the Netscape Communicator Internet suite, in turn succeeded by Netscape 6, Netscape 7, Netscape Browser 8, and Netscape Navigator 9.
AOL formally stopped development of Netscape Navigator on December 28, 2007, but continued supporting the web browser with security updates until March 1, 2008, when AOL canceled technical support. AOL allows downloading of archived versions of the Netscape Navigator web browser family. Moreover, AOL maintains the Netscape website as an Internet portal.