Hi!
NoMachine software is free for non-commercial use. If you are using the software at work, or in a commercial environment, you are required to acquire an Enterprise Desktop license or any of our Enterprise products for the computers/devices you want to access. Software for the computers/devices that you are connecting from is free to download and install. Unlike some other remote access software, NoMachine doesn’t try to guess or find out whether you are using the software in a commercial-related activity, but, as the license states, if you are using our software in your business, you are required to buy a license
Let me point you to this article in case you’ve not already read it because it identifies some typical commercial usage examples which will help eliminate any doubts:
Is NoMachine for remote desktop free?
https://www.nomachine.com/AR03P00972