Oracle VM Virtual Box
Oracle VM VirtualBox enables desktop or laptop computers to simultaneously run multiple operating systems, allowing users to get the most flexibility and utilization out of their PCs.
Oracle VM VirtualBox provides high performance, support for a large number of virtual appliances available in the OVF format, multi-platform application development and testing, 2D/3D graphics acceleration, and cutting-edge features—including the ability to teleport a running virtual machine between hosts.