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VMware ESXi Free vs SmartOS: catalog facts
VMware ESXi Free	SmartOS
Freemium Free hypervisor edition for small deployments, with paid vSphere licensing for advanced…	Free The SmartOS ISO is free and open source; Triton offers paid private and hosted cloud…
Self-hosted	Self-hosted
Mature, widely deployed hypervisor used extensively in enterprise environments Free edition available for smaller homelab or small-business use	Runs zones and KVM or bhyve VMs on the same host ZFS and DTrace built in
Free edition lacks the centralized management features found in licensed vSphere Requires dedicated hardware to install, as it runs directly on bare metal	Illumos base is less familiar than Linux Cloud management features require Triton on top
Downloadable app	Operating system
Closed source	Open source
License not stated	License not stated
Not stated if an account is needed	No account 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 23, 2026

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