Mac OSX

Mac OS X is a line of graphical operating systems developed, marketed, and sold by Apple Inc., the latest of which is pre-loaded on all currently shipping Macintosh computers. Mac OS X is the successor to the original Mac OS, which had been Apple's primary operating system (OS) since 1984. Unlike its predecessors, Mac OS X is a Unix OS built on technology that had been developed at NeXT through the second half of the 1980s until Apple purchased the company in early 1997. The first version released was Mac OS X Server 1.0 in 1999, and a desktop oriented version, Mac OS X v10.0 followed in March 2001. Since then, four more distinct "end-user" and "server" versions have been released, most recently Mac OS X v10.4 in April 2005. The next version of Mac OS X, v10.5 "Leopard", has been announced for release on October 26, 2007.