Below are ontologies created for the SWAT project. We are developing ontologies in the Web Ontology Language (OWL) that are formal and axiomatically rich; the kinds of ontology for which a natural language based editing tool could have great benefit.
We provide different versions of each ontology. You can follow how the ontologies change from version 1 to their current version.

These ontologies are built under Alan Rector's upper ontology. Later on, we'll also re-cast these ontologies under the Basic formal Ontology (BFO).