View a large collection of OWL files. In this Protege library you will find a huge set of ontologies in several subjects. When you start your own ontology, you should first look here.

Protégé is a free, open source ontology editor and knowledge-base framework. The Protégé platform supports two main ways of modeling ontologies via the Protégé-Frames and Protégé-OWL editors. Protégé ontologies can be exported into a variety of formats including RDF(S), OWL, and XML Schema. Visit website

From today on, this new website with all information about ontologies for professional life is online. Please participate in discussions and enter questions about your own topics. You are more then welcome to join this community, so please register as a user!