The project defines a number of ontologies, available in the URI space below https://w3id.org/won/.
- https://w3id.org/won/core - This ontology is used to describe WoN nodes, Atoms, and Connections
- https://w3id.org/won/message - This ontology is used for specifying messages.
The ontology URIs redirect to the latest release of the respective ontology. All ontologies are hosted in the GitHub page of this repository - (the gh-pages branch), their sources are in the won-vocab module of this projct.