Welcome to BioPortal, the world's most comprehensive repository of biomedical ontologies

Ontology Visits (September 2018)
BioPortal Statistics
  • Ontologies 737
  • Classes 9,593,310
  • Resources Indexed 48
  • Indexed Records 39,537,360
  • Direct Annotations 95,468,433,792
  • Direct Plus Expanded Annotations 144,789,582,932