Virtualization

Open-source alternatives to commercial virtualization platforms, including Proxmox VE, XCP-ng with Xen Orchestra, Harvester, OpenNebula and Apache CloudStack.

VMware vSphere

VMware vSphere under Broadcom is sold only as per-core subscriptions in VMware vSphere Foundation or VMware Cloud Foundation; teams leaving it move to Proxmox VE, XCP-ng or OpenStack.

Nutanix

Nutanix Cloud Infrastructure bundles the AHV hypervisor and hyperconverged storage in per-core term subscriptions; open-source replacements are Proxmox VE with Ceph, Harvester and OpenStack.

Microsoft Hyper-V

Microsoft Hyper-V is the hypervisor built into Windows Server, licensed through per-core Windows Server and System Center editions. Pages here cover replacing it with Proxmox VE or XCP-ng.

XenServer

XenServer, formerly Citrix Hypervisor, is licensed per socket with a Premium Edition only. Pages here cover moving to XCP-ng, which shares its Xen and XAPI base, or to Proxmox VE.

Red Hat Virtualization

Red Hat Virtualization 4.4 is past maintenance and its Extended Life Phase ends in August 2026. Pages here cover moving to oVirt, KubeVirt, Proxmox VE or OpenStack.

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