Proxmox Virtual Environment, Limbo PC Emulator, Virtualizor, AQEMU, Deis, Danube Cloud, XCP-ng, oVirt, JavaQemu, Apache Mesos, QtEmu, JPCSIM, bhyve, OpenNode Cloud Platform, Nebula Container Orchestrator, SmartOS, VMware Server, ZeroStack, Parallels Workstation, Panamax, Karesansui, PetiteCloud are some alternatives to Microsoft Hyper-V Server.