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Sun Microsystems, Inc.'s version of theUnix operating system. As well as the core operatingsystem, Solaris inludes networking software, the Java VirtualMachine, the CDE/Desktop that includes an X11-basedwindowing environment and graphical user interface.Sun claim that Solaris is not just an operating system but an"operating environment".Solaris 1.x was a retroactive (marketing?) name for SunOS4.1.x (where x>=1).Solaris 2.x (which is the first version most people call"Solaris") includes SunOS5.x, which is an SVR4-derived Unix,OpenWindows 3.x, and tooltalk.Version 2.7 ("Solaris 7") was around in 1999-03-02. Version2.8 was released in June 2000. Latest version: 9, as of2002-07-15. (http://sun.com/solaris/).