Library cataloging
and classification
main topicsoftware
Dewey Decimal005.3, 005 Edit this on Wikidata
Universal Decimal0 004.4

This category is about all aspects of software (SW) which here is taken to include the following categories:

The first two of these are classified for running software on computers (i.e., actually using the computers), while the last one is about developing the software in the first place.