Alternatives to VMware ESXi Free

Industry-standard bare-metal hypervisor with a free tier for small setups. The listings below can replace it for an important use case. Each note says what changes if you switch.

Replacements

Listings that take over the same core job as VMware ESXi Free.

  • Proxmox VE

    A bare-metal server platform that runs KVM virtual machines and LXC containers from one web interface.

    FreemiumOpen sourceLinuxSelf-hosted

    Proxmox VE is open source under AGPL-3.0 and runs KVM virtual machines and LXC containers from one web interface, with backup, clustering and ESXi guest import built in.

  • Hyper-V

    Microsoft's type-1 hypervisor built into Windows and Windows Server for running Windows and Linux virtual machines.

    FreeProprietaryWindows

    Hyper-V is a type-1 hypervisor built into Windows and Windows Server, so it needs a Windows host instead of installing directly as a dedicated bare-metal system.

  • XCP-ng

    Open-source bare-metal hypervisor built on Xen, managed through Xen Orchestra.

    FreeOpen sourceLinuxSelf-hosted

    XCP-ng is an open-source Xen-based bare-metal hypervisor with no features locked behind a licence key, though hardware compatibility follows Xen and is narrower.

  • Harvester

    Hyper-converged infrastructure that runs virtual machines on top of Kubernetes.

    FreeOpen sourceLinuxSelf-hosted

    Harvester runs virtual machines on top of Kubernetes alongside containers, is open source under Apache-2.0, and expects at least three bare-metal nodes for production.

  • oVirt

    Centralised management platform for KVM virtual machines across a cluster.

    FreeOpen sourceLinuxWebSelf-hosted

    oVirt is an open-source management platform for KVM clusters with live migration and high availability, but development has slowed and it expects enterprise-style shared storage.

  • Microsoft Hyper-V

    A type-1 hypervisor built into Windows Server and Windows for creating and running virtual machines.

    FreeProprietaryWindows

    Microsoft Hyper-V is built into Windows and Windows Server at no extra cost, but it is Windows only and not available in every edition.

  • Unraid

    A paid home server operating system combining NAS storage, Docker containers and virtual machines.

    PaidProprietarySelf-hosted

    Unraid combines NAS storage, Docker containers and virtual machines with graphics card passthrough, and requires a paid licence after the trial rather than offering a free tier.

  • SmartOS

    An open-source illumos-based hypervisor operating system that runs zones and KVM or bhyve virtual machines.

    FreeOpen sourceSelf-hosted

    SmartOS is an open source illumos-based hypervisor running zones and KVM or bhyve VMs with ZFS built in, though illumos is less familiar.

Also worth comparing

These listings name VMware ESXi Free as their own alternative, so the relationship runs both ways.

  • KVM

    The Linux kernel's built-in hypervisor for hardware-accelerated virtual machines.

    FreeOpen sourceLinux

    VMware ESXi Free is a closed-source bare-metal hypervisor with a free tier, installed on dedicated hardware instead of being part of the Linux kernel.

  • Xen Project

    An open source type-1 hypervisor that runs several isolated operating systems on the same hardware.

    FreeOpen sourceSelf-hosted

    VMware ESXi Free is a closed source bare-metal hypervisor widely used in enterprise, with a free tier lacking centralized vSphere management.

  • XenServer

    A Xen-based server virtualization platform for running and managing virtual machines on your own hardware.

    PaidProprietarySelf-hosted

    VMware ESXi Free is a widely deployed bare-metal hypervisor with a free tier, though the free edition lacks centralized vSphere management features.

Similar software

Related functionality, not a direct replacement.