This repository was created because the 2012 version of OpenCyc files are corrupt in most locations including archive.org.
All the OpenCyc ontology files are in owl format that is also compatible with xml.
Click on any of the links to start downloading.
Permanent IDs: opencyc-2012-05-10.owl.gz
Human-readable IDs: opencyc-2012-05-10-readable.owl.gz
Permanent IDs: opencyc-2010-08-15.owl.gz
Human-readable IDs: opencyc-2010-08-15-readable.owl.gz
Permanent IDs: opencyc-2009-04-07.owl.gz
Human-readable IDs: opencyc-2009-04-07-readable.owl.gz