It is also possible to get applications through HACS. This is still early so you will have to get the latest version of HACS and uninstall and install it again if you have already configured through GUI.
Here is detailed instructions how to enable getting NetDaemon apps through HACS
Contribute own apps through HACS
There are still not many apps available yet but please if you can contribute apps there are a template here.
Thanks @ludeeus for your awesome work with HACS and getting NetDaemon support in it.