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XenServerVMware ESXi Free
Paid

Commercial licences with a Trial Edition; included in some Citrix subscriptions.

 Freemium

Free hypervisor edition for small deployments, with paid vSphere licensing for advanced…

Self-hosted Self-hosted
  • Mature Xen-based hypervisor
  • Included with several Citrix subscriptions
  • Mature, widely deployed hypervisor used extensively in enterprise environments
  • Free edition available for smaller homelab or small-business use
  • Commercial licensing for full use
  • Oriented toward businesses and Citrix environments
  • Free edition lacks the centralized management features found in licensed vSphere
  • Requires dedicated hardware to install, as it runs directly on bare metal
Operating system Downloadable app
Closed source Closed source
License: Proprietary License not stated
Not stated if an account is needed Not stated if an account is needed
Not stated if it works offline Not stated if it works offline

Checked September 24, 2026

Checked September 22, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.