Modern OS?

[jorkany]

Operating systems in popular usage which are still being maintained and support the features and hardware you would expect a current OS to support (SMP, Multiuser, memory management, to some extent hardware virtualization, up-to-date hardware standards, etc.) Primarily Windows, Linux, OS X and iOS, Android, etc.

In short, OSes which people are coming to, not those which people are running away from.

[jorkany]

That would mean that even an OS that's a century ahead of it's time would be old fashioned if no one used it :rolleyes:

Correct. Modern is defined by cultural activity around something new and nontraditional. If there is no cultural interest, it is not modern by definition. If a century from now someone discovered your hypothetical OS and began using it or incorporating it's features into other OSes and it then had a cultural impact, it would be modern.

The Newton is a good example of this. The Newton itself is not considered modern today, however some of its features are modern.