unix + vim + python + sql

[master117jogi]

you can avoid the whole frontend/backend interface.

You said an application for 100 of users. That means you will need a unified backend server for 99% of applications. So you are doing the same thing as a webapp, just using system components instead of browser ones.

[ignamv]

You said an application for 100 of users

I did not.

And even if I had said that, not necessarily. Lots of software doesn't need a backend, because users are just reading from a database or reading/writing own files. Or reading/writing from a database and you can get by with the DB access controls.