Designed on top of RDF, it addresses certain limitations on the part of RDF/S. In particular it includes support for Named Graphs @en

The Core Ontology of the NEPOMUK suite defines basic elements such as Data Object, Information Element ... @en

NEPOMUK Contact Ontology describes contact information, common in many places on the desktop. It evolved from the VCARD specification (RFC 2426) and has been inspired by the...

The NEPOMUK Calendaring Ontology intends to provide vocabulary for describing calendaring data (events, tasks, journal entries) which is an important part of the body of...

The NEPOMUK Annotation Ontology is an ontology for annotation, providing vocabulary which is commonly required to annotate resources on the semantic desktop. @en