KVM

From Proxmox VE

KVM (for Kernel-based Virtual Machine) is a full virtualization solution on x86 hardware containing virtualization extensions (Intel VT or AMD-V CPU is needed). KVM is based on Qemu. Each virtual machine has private virtualized hardware: a network card, disk, graphics adapter, etc. KVM is a similar to XEN, but KVM is part of Linux and uses the regular Linux scheduler and memory management.

KVM is perfectly suited to unmodified operating systems including windows operating systems like Windows 2000, Windows XP, Windows Vista, Windows Server 2003 and Windows Server 2008.

For details see KVM.