<Tr> <Th> VMware Workstation </Th> <Td> VMware </Td> <Td> x86 - 64 </Td> <Td> x86, x86 - 64 </Td> <Td> Windows, Linux </Td> <Td> Same as VMware ESX Server </Td> <Td> Proprietary </Td> </Tr> <Tr> <Th> VMware Player, later VMware Workstation Player </Th> <Td> VMware </Td> <Td> x86 - 64 </Td> <Td> x86, x86 - 64 </Td> <Td> Windows, Linux </Td> <Td> Same as VMware ESX Server </Td> <Td> Proprietary, free for personal non-commercial use </Td> </Tr> <Tr> <Th> Wind River Hypervisor </Th> <Td> Wind River </Td> <Td> x86, x86 - 64, PowerPC, ARM </Td> <Td> Same as host </Td> <Td> No host OS </Td> <Td> Linux, VxWorks, unmodified guests (including MS Windows and RTOSes such ach OSE, QNX and others), bare metal virtual board </Td> <Td> Proprietary </Td> </Tr> <Tr> <Th> Xen </Th> <Td> Xensource, Now Citrix Systems </Td> <Td> x86, x86 - 64, ARM, IA - 64 (inactive), PowerPC (inactive) </Td> <Td> Same as host </Td> <Td> GNU / Linux, Unix - like </Td> <Td> GNU / Linux, FreeBSD, MiniOS, NetBSD, Solaris, Windows 7 / XP / Vista / Server 2008 (requires Intel VT - x (Vanderpool) or AMD - V (Pacifica) - capable CPU), Plan 9 </Td> <Td> GNU GPLv2 + </Td> </Tr>

3. list the differences between vmware qemu and kvm