Teamviewer alternative?

Question

Remote access

Teamviewer always and everywhere now writes that it is commercial use and allows it to work for 60 seconds or so.
He wrote to them that "I'm not guilty." Received the answer: "guilty".
What viable alternatives exist?
RemotePC - can you praise? Or something else to look out for?
In the notebook there are about 30-40 computers of my own and acquaintances whom I help.
The main thing is that NATs make their way and it would not be necessary to install any of their own dedicated servers.
In general, maybe without a notebook (you can keep it in Google Doc). But of course I'd like to...

Answer 1

Aeroadmin

Answer 2

https://myassistant.rf
ASSISTANT is a Russian-made high-tech software product that provides secure remote access to computers via a local network or the Internet. Ample opportunities together with ease of use make the ASSISTANT an indispensable assistant in solving a wide range of tasks: from remote work to server administration.
Developed with the assistance of the Federal State Budgetary Institution "Fund for Assistance to the Development of Small Forms of Enterprises in the Scientific and Technical Sphere".
Registered in the Unified Register of Russian Programs for Electronic Computers and Databases.

Answer 3

Not good, because only in Russian.