Hyper-V is a native hypervisor installed onto some Windows 10 and Windows Server operating systems. It is important to note that Hyper-V is not supported on Windows 10 Home. LXD is a hypervisor that runs on Linux operating systems and ESXi is a proprietary hypervisor from VMWare that runs directly on a host machine (bare metal) without the need for a host operating system.
Microsoft Hyper-V, codenamed Viridian, and briefly known before its release as Windows Server Virtualization, is a native hypervisor; it can create virtual machines on x86-64 systems running Windows. Starting with Windows 8, Hyper-V superseded Windows Virtual PC as the hardware virtualization component of the client editions of Windows NT. A server computer running Hyper-V can be configured to expose individual virtual machines to one or more networks.
Hyper-V was first released with Windows Server 2008, and has been available without additional charge since Windows Server 2012 and Windows 8. A standalone Windows Hyper-V Server is free, but with command-line interface only, the last version of free Hyper-V Server is Hyper-V Server 2019, which is made from Windows Server 2019.