The computer you want to access or 'remote machine' can be a physical host or a virtual machine, it makes no difference. On the connecting client you can install either the free-to-download NoMachine or Enterprise Client packages: either will let you launch the connection to the host. Multiple users connecting, who must have a system account on the remote host, will be able to view and interact with the same physical desktop. NoMachine Enterprise Desktop, also installed on the remote computer you want to access, offers unlimited connections to the remote physical desktop. On the connecting client you can install NoMachine Free Edition (it also includes the client component used to start sessions) or Enterprise Client to launch the connection to the host where you installed the free edition of NoMachine. It is installed on the remote computer you want to access. It offers the possibility to log in to any Linux, Windows, Mac or Raspberry machine on any network to access all your files, folders, multi-media material and basically carry out everyday activities on that machine just as if you were sitting in front of it.

The free to download NoMachine software (NoMachine Free Edition) allows one connection to the remote physical desktop.

Enterprise nx nomachine vs free