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Xen ProjectXenServer
Free

Free and open source, developed under the Linux Foundation.

 Paid

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

Self-hosted Self-hosted
  • Type-1 hypervisor with strong isolation between guests
  • Used in servers, embedded and safety-critical systems
  • Mature Xen-based hypervisor
  • Included with several Citrix subscriptions
  • Installed on bare metal, so setup is more involved than desktop VM apps
  • Aimed at infrastructure builders rather than casual users
  • Commercial licensing for full use
  • Oriented toward businesses and Citrix environments
Downloadable app Operating system
Open source Closed source
License not stated License: Proprietary
No account needed Not stated if an account is needed
Works offline Not stated if it works offline

Checked September 23, 2026

Checked September 24, 2026

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