A curated list of ontologies for semantic interoperability, AI systems, knowledge graphs, the semantic web, and digital twins.
This list is populated by volunteers. A scoreboard is provided below displaying user contributions to the list, where 1 ontology = 1 point.
| 🏅 Rank | Contributor | Score |
|---|---|---|
| 🥇 | @John Beverley |
258 |
All contributions must include updates to the main README.md file. along with a dump of the ontology in the /dump folder. Your ontology should be added to the appropriate section (Upper-Level, Mid-Level, Domain Ontologies, etc.) following the existing format:
- [Ontology Name](link-to-source) - Brief description of the ontology.More information on how to contibute here
- Linked Open Vocabularies (LOV) - A popular registry of reusable vocabularies for describing data.
- BioPortal - The world's most comprehensive repository of biomedical ontologies.
- OntoHub - A collaborative platform for managing distributed ontologies.
- Open Biological and Biomedical Ontologies (OBO) - Coordinated set of ontologies for the life sciences.
- W3C Ontology Standards - Official web ontology standards including OWL and SKOS.
- Basic Formal Ontology (BFO) - ISO-standard top-level ontology used in scientific and defense applications.
- DOLCE - Descriptive Ontology for Linguistic and Cognitive Engineering.
- SUMO - Suggested Upper Merged Ontology, supports natural language processing and reasoning.
- GFO (General Formal Ontology) - Integrates objects, processes, and time.
- GIST Core - gist is a minimalist upper ontology created by Semantic Arts
- gUFO - gUFO is a lightweight implementation of the Unified Foundational Ontology (UFO).
- Common Core Ontologies (CCO) - Modular ontologies for scientific and technical domains.
- Agent Ontology - Represents agents, especially persons and organizations, and their roles.
- Artifact Ontology - Represents artifacts, especially equipment, devices, and systems.
- Currency Unit Ontology - Represents currencies issued and used by countries.
- Event Ontology - Represents processual entities, especially those performed by agents across domains.
- Extended Relation Ontology - Represents relations between entities at the mid-level of Common Core Ontologies.
- Facility Ontology - Represents buildings and campuses designed to serve specific purposes across domains.
- Geospatial Ontology - Represents sites, spatial regions, and other entities near the Earth's surface.
- Information Entity Ontology - Represents information entities, including data, documents, and digital content.
- Quality Ontology - Represents qualities, attributes, and characteristics of entities across domains.
- Time Ontology - Represents temporal concepts and time-related entities across domains.
- Units of Measure Ontology - Represents units of measurement and their relationships across different measurement systems.
- Industrial Ontologies Foundry Core (IOF) - Core ontology for industrial manufacturing and services.
- Core Ontology for Biology and Biomedicine (COB) - Small mid-level ontology of widely used terms in the OBO Foundry
- SNOMED CT - Systematized Nomenclature of Medicine — Clinical Terms.
- FIBO (Financial Industry Business Ontology) - Financial concepts and relationships.
- XBRL Ontology - For financial reporting data in semantic web formats.
- ENVO (Environment Ontology) - For environmental features and habitats.
- RO (Relations Ontology) - Core relations used across biological ontologies.
- Time Ontology in OWL - For temporal concepts.
- Cybersecurity Ontology - Describes threat intelligence and security operations.
- Agrovoc - Agricultural thesaurus and ontology by FAO.
- FOAF (Friend of a Friend) - Vocabulary for describing people and social networks.
- PROV-O - W3C recommendation for modeling provenance.
- APOLLO-SV (Apollo Structured Vocabulary) - An OWL2 ontology of phenomena in infectious disease epidemiology and population biology for use in epidemic simulation.
- D3FEND - Domain ontology modeling key concepts and relations in the cybersecurity countermeasure domain.
- DISDRIV (Disease Drivers Ontology) - Ontology for drivers and triggers of human diseases, built to classify ExO ontology exposure stressors.
- DOID (Human Disease Ontology) - An ontology for describing the classification of human diseases organized by etiology.
- MAxO (Medical Action Ontology) - The Medical Action Ontology (MAxO) provides a broad view of medical actions and includes terms for medical procedures, interventions, therapies, treatments, and recommendations.
- INO (Interaction Network Ontology) - An ontology in the domain of interactions and interaction networks. Represents general and species-neutral types of interactions and interaction networks, and their related elements and relations.
- MF (Mental Functioning Ontology) - An overarching ontology for all aspects of mental functioning.
- Dublin Core - Metadata terms for describing digital resources.
- Protégé - Widely used open-source ontology editor.
- OWL API - Java API for working with OWL ontologies.
- RDFlib - Python library for working with RDF.
- ROBOT - Command-line tool for automating ontology workflows.
Found a new ontology? Let's catch them all. Want to improve the descriptions? Contributions are welcome!
Simply add ontology files to the dump folder and submit a PR. Please read the contributing guidelines for details.