Use this tag for the remote desktop software developed by the company of the same name.
From NoMachine (free version) - Installation and Configuration Guide:
What is NoMachine for?
NoMachine, tailored for personal use, allows you to connect from your computer to the desktop of another computer with NoMachine software installed.
The double side of NoMachine, a client and a server all-in-one
Each NoMachine installation provides everything that is necessary to give access to your own computer from remote (NoMachine acts as a server). It allows one connection to the physical desktop of its host.
The same NoMachine installation can also be used to connect you to other NoMachine computers (NoMachine acts as a client).
NoMachine is fully operative once installed
Once installation has been completed with success, NoMachine is up-and-running and ready to accept connections to the physical desktop of its host machine. All the necessary services are automatically started.
Headless Linux machines
A headless computer is configured to operate without a monitor, keyboard, and mouse. In this case, or when more in general the local X server cannot be found, NoMachine will use its own display service (that is an embedded X server) to let users connect seamlessly a physical desktop running in background on the remote machine. No manual intervention or configuration is needed, but a desktop environment needs to be installed on such machine.
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