VMware allows you to run 'virtual machines' inside a Linux host. It is not an emulator. It provides a virtual computer within the host which can boot whichever OS you decide to put on the filesystem image that is used as a harddrive. It will run DOS 6.22, Win 3.1, Win9x, WinNT/2000/XP/2003, Linux, Novell, and more. The only main requirement is a 400 MHz or better machine, along with lots of RAM (128M minimum, 256M recommended). License: Free To Use But Restricted Changes: Several security vulnerabilities, reported as CVE-2007-0061, CVE-2007-0062, CVE-2007-0063, CVE-2007-4059, CVE-2007-4155, CVE-2007-4496, and CVE-2007-4497, were fixed.

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