macOS is an operating system developed by Apple.

QEMU (short for Quick Emulator) is a free and open-source hosted hypervisor that performs hardware virtualization QEMU is a hosted virtual machine monitor.

Parallels Desktop for Mac, by Parallels, is software providing hardware virtualization for Macintosh computers with Intel processors.

DOSBox is an emulator program that emulates an IBM PC compatible computer running a DOS operating system.

Docker is an open platform for developers and sysadmins to build, ship, and run distributed applications, whether on laptops, data center VMs, or the cloud.

Apache Mesos is an open-source project to manage computer clusters.