Product : VMware, vSphere/6.0, Enterprise Plus
Feature : Guest OS Support, Interoperability, Hypervisor
Content Owner:  Roman Macek
Summary
Very Comprehensive (see link)
Details
Very comprehensive - vSphere 5.5 is compatible with various versions of: Asianux, Canonical, CentOS, Debian, FreeBSD, OS/2, Microsoft (MS-DOS, Windows 3.1, 95, 98, NT4, 2000, 2003, 2008, 2012 incl. R2, XP, Vista, Win7, 8), Netware, Oracle Linux, SCO OpenServer, SCO Unixware, Solaris, RHEL, SLES and Apple OS X server.

Details: http://www.vmware.com/resources/compatibility/search.php?action=base&deviceCategory=software