The time-space matrix is a way to classify groupware based on:
The time axis may alsp be labeled synchronous/asynchronous and space axis co-located/remote.
- time – when the participants are working – at the same time or not
- space – where the participants are working – at the same place or not
The time axis may alsp be labeled synchronous/asynchronous and space axis co-located/remote.

Time/space matrix, with examples. Source Chapter 19 Groupware Human–Computer Interaction, Dix, Finlay, Abowd, Beale (2004).
