Category:Time-sharing operating systems Source: en.wikipedia.org/wiki/Category:Time-sharing_operating_systems

From Time-sharing system evolution: In the 1960s, time-sharing was a new concept, a departure from the batch processing approach previously used with computers. ... Today, of course, virtually all operating systems are time-sharing systems.

This category includes those operating systems that, in their name or article text, are described as time-sharing.