5 open source virtualization technologies

Short for Kernel-based Virtual Machine, KVM, is not as widely deployed as other open source hypervisors, but its stature is growing rapidly. KVM is a full virtualization hypervisor and can run both Windows and Linux guests.

Kernel-based Virtual Machine, KVM


Xen supports paravirtualization and "hardware assisted" virtualization for modified and un-modified guests, respectively.


OpenVZ is container-based virtualization for Linux which has become quite popular among the mass-market Linux hosting providers as an inexpensive way to provide virtual private servers.

VirtualBox runs on Windows, Linux, Solaris and Mac OS X and can support all those operating systems as guests.


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