Yes, you can. The NoMachine free edition is available for anyone seeking remote desktop software for personal or individual use. Simply use the IP address of your target computer to connect.

If you were previously connecting by using the Machine Id of the target computer, e.g. using the free 7-day Network evaluation period, and you no longer wish to connect that way, you can continue to reach the same computer using its IP address instead. In that case, you do not even need to login with your User Id to start the connection.

See the following tutorial for instructions on how to connect to your remote computer using its IP address:

https://www.nomachine.com/support/documents/getting-started-with-nomachine