• Oracle VM VirtualBox 37%

• KVM 22.2%

• VMware 21.2%

• XEN 4.9%

• OpenStack 4.8%

• QEMU 4.1%

• Other 2.7%*

• OpenVZ 1.7%

• Linux-VServer 1.3%

• Symantec Workspace Virtualization .2%

*Popular write-in: LXC.