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VMware ESXi Free vs XenServer: catalog facts
VMware ESXi Free	XenServer
Freemium Free hypervisor edition for small deployments, with paid vSphere licensing for advanced…	Paid Commercial licences with a Trial Edition; included in some Citrix subscriptions.
Self-hosted	Self-hosted
Mature, widely deployed hypervisor used extensively in enterprise environments Free edition available for smaller homelab or small-business use	Mature Xen-based hypervisor Included with several Citrix subscriptions
Free edition lacks the centralized management features found in licensed vSphere Requires dedicated hardware to install, as it runs directly on bare metal	Commercial licensing for full use Oriented toward businesses and Citrix environments
Downloadable app	Operating system
Closed source	Closed source
License not stated	License: Proprietary
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
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked September 24, 2026

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