This is an interesting issue - how people interpet the name seems to come out 50/50 between "OS for learning OS dev" and "OS for educational content". In my exp

This is an interesting issue - how people interpet the name seems to come out 50/50 between "OS for learning OS dev" and "OS for educational content". In my experience, people's backgrounds are the biggest factor affecting which they think of. We're reluctant to go with "model" OS or similar because we're not actually implementing anything like an ideal OS - we don't use optimised algorithms for example. The idea being that you can learn/teach the OS concept using a simple implementation (and readable code) and then students/developers can optimise as an exercise/extension/for a real OS. So it's not a "model" OS but is an "example" OS to use to teach the key concepts. Unfortunately, "example" OS leads people to think our OS is practical as a basis for a real OS, which it isn't and we don't want to give the impression we're trying to rival Linux/Windows/OSX/etc. No name seems to give a universally correct and good first impression!