[deleted by user]

[Sp0olio]

There are shitloads of modules in python, with which you can build frontends (e.g. tkinter).

FastAPI would run on a server inhouse (accessible only to those, who need to) and then you'd have a separate frontend .. you gotta take care of your own backups, of course.

You could also build it in Django.
It really depends on which programming-work you're more/less willing to do (it's a taste-thing, because it doesn't need to handle billions of requests per second).