Hello and welcome to the Greenbone Community forum!
I suggest scanning the forum for posts about this topic. I think this depends on your will to put together the right solution for your use case. For example openvas-nasl can be used to test .nasl files:
Depending on how low RAM, gvm-cli may be the best option to get full GVM functionality without using GSA making full page requests but it still requires the “daemons” running.
Also, if you want to run the Notus scanner alone, maybe this is a good place to start.
Feel free to describe your use case in more detail, or ask questions about some potential solutions you find.