From LQWiki

Virtualization typically means platform virtualization. It allows you to run one or more operating system images on one computer. For more information read http://en.wikipedia.org/wiki/Virtualization.

Linux Virtualization

Platform virtualization under Linux can be done with

• VMWare - full virtualization
• VirtualBox - like VMWare, but only 1 processor per VM
• KVM - full virtualization (paravirtualization is in test)
• XEN - paravirtualization
• User-mode Linux - pseudo virtualization
• Qemu - processor emulator

Guides

• virtualize your computer

See also

• Emulators and virtual Machines