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

Ontology Visits (January 2019)
BioPortal Statistics
  • Ontologies 760
  • Classes 9,128,086
  • Resources Indexed 48
  • Indexed Records 39,537,360
  • Direct Annotations 95,468,433,792
  • Direct Plus Expanded Annotations 144,789,582,932