Comment by lproven

Well, no, not really, AFAIK.

But it depends what you define as "the full OS".

It is mainly an embedded OS for routers and engine-control units and traffic lights. For that role, it doesn't need a GUI or a desktop or dev tools or a network stack.

So are they part of the "full OS"?

It depends where you stand, and how you look at it.

The Demo Disk contains a lot more than 1.4MB of code. It's more like 3-4MB of code, but that does not mean it is "the full OS".