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

Ontology Visits (October 2019)
BioPortal Statistics
  • Ontologies 821
  • Classes 8,836,163
  • Resources Indexed 48
  • Indexed Records 39,537,360
  • Direct Annotations 95,468,433,792
  • Direct Plus Expanded Annotations 144,789,582,932