There are different types of ontologies ranging from knowledge representation ontologies, domain ontologies, linguistic ontologies, and top-level ontologies. A selection of a few examples from different types are provided below.
Knowledge Representation Ontologies:
Frame Ontology
OKCB
Top-Level Ontologies:
Cyc
SOWA
Standard Upper Ontology
Linguistic Ontologies:
Wordnet
Generalized Upper Model
Sensus
Eurowordnet
Mikrokosmos
Ecommerce Ontologies (Domain Ontology):
United Nations Standards Products and Services Codes
North American Industry Classification System
Standard Classification of Transported Goods
E-Cl@ss
RosettaNet
Medical Ontologies (Domain Ontology):
GALEN
UMLS
ON9
Engineering Ontologies (Domain Ontology):
EngMath
PhysSys
Enterprise Ontologies (Domain Ontology):
Enterprise Ontology
TOVE
Chemistry Ontologies (Domain Ontology):
Chemicals
Ions
Environmental Pollutants
Knowledge Mgmt Ontologies (Domain Ontology):
KA Ontology - Project, Organization, Person, Publication, Event, Research-Topic, Research-Product
Nature.com Subjects Ontologies
Nature.com Subjects Ontologies
