hypervisor
piece of computer software, firmware or hardware that creates and runs virtual machines
Parallels (software)
software for virtualization
Hyper-V
type 1 hypervisor produced by Microsoft, available either standalone or as a feature of certain Windows Server and Windows 8 versions
Microsoft Virtual Server
software
Parallels Workstation
first commercial software product released by Parallels, Inc
HP Integrity Virtual Machines
virtualisation software
Kernel-based Virtual Machine
virtualization module in the Linux kernel
Parallels Desktop for Mac
virtual machine
Parallels Server for Mac
server virtualization product built for the Mac OS X Server platform