Product Types Ontology

"This service provides ca. 300,000 precise definitions for types of product or services that extend the schema.org and GoodRelations standards for e-commerce markup. You can use this ontology to describe any object for which a matching entry in the English Wikipedia exists. Thanks to the many links between the multiple language editions of Wikipedia, you can search for the best class in your favorite language, e.g. in the German or Italian Wikipedia, and then click on the English translation on the left-hand side to get to the matching page in the English Wikipedia."