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

Search for a class
Advanced search
Find an ontology
Ontology visits (May 2026)
More
Statistics
  • Ontologies

    1,281

  • Classes

    12,299,817

  • Properties

    163,025

  • Individuals

    2,106,905

  • Mappings

    62,508,120