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OntoPortal, a generic technology to build ontology repositories or semantic artefact catalogues

The most advanced and rich technology for ontology services!


Get a quick sense of what's OntoPortal with our short presenting paper . Please, use this to reference to our work too.

Save and find semantic artefacts

The primary mission of an OntoPortal installation is to host and serve ontologies and semantic artefacts. The portals accept resources in multiple knowledge representation languages: OWL, RDFS, SKOS, OBO and UMLS-RRF.

Ontologies are semantically described with rich metadata (partially extracted from the source files), and a browsing user interface allows to quickly identify, with faceted search, the ontologies of interest based on their metadata.


Browse the content of semantic artefacts

OntoPortal lets users visualize a class/concept or property within its hierarchy, as well as see related information for this entity (as relations included in the source file).


Search for terms

All the semantic artefacts content hosted in an OntoPortal is indexed and can easily be retrieved.


Much more available as standard OntoPortal services...

  • Custom hosting
    Organize public/private ontologies, group/categorize them and offers custom slices.
  • Versioning
    Store all ontology versions, whether manually submitted or automatically pulled. Get diff between versions.
  • Widgets
    Easily embed Web widgets in external web applications to facilitate the reuse/visualization of ontology entities.
  • Mappings
    Store, retrieve and explore mappings between ontology terms. Get lexical overlap of an ontology with all the other ones in a portal.
  • Community
    Get notified from feedback as notes, change requests and record projects using ontologies.
  • Annotator
    Identify semantic artefact classes or concepts inside any raw text.
  • Recommender
    Get ontology recommendations for a provided text or keyword list.
  • Automated access
    Access all content and services with two different endpoints: a REST web service API that returns JSON-LD and a SPARQL endpoint.

And even more additional features and services developed by the Alliance...

  • Enhanced mapping features
    More flexible mapping storage, import mappings in bulk or extract SKOS mappings explicitly defined in semantic artefact source files.
  • Enhanced semantic annotation workflow
    Natural language-based enhancements of the Annotator with scoring methods context detection (e.g., negation, temporality).
  • Extended ontology metadata model
    Extended and harmonized metadata model based on MOD1.4 to better support descriptions of ontologies and their relations.
  • Semantic artefact FAIRness assessment
    Get FAIR score for each semantic artefact from 61 questions implemented from the Ontology FAIRness Evaluation (O’FAIRe) methodology.
  • Extended SKOS support
    Full support of SKOS and innovative browsing approaches to discover and navigate concepts in SKOS thesauri that make extensive use of scheme and collections.
  • Assigning DOIs
    Request a Digital Object Identifier (DOI) for resources hosted in the portal using Datacite services.

What Users Say

I rely on BioPortal for easy access to SNOMED and a number of other terminologies, particularly for when I just want to check the existence of specific terms. I love having a one-stop shop to find just about any ontology I might need.

Jessie Tenenbaum - Duke University

The TSCF lab from INRAE uses AgroPortal to share and promote its RDF semantic resources related to agriculture: the French Crop Usage Thesaurus, BBCH-based Plant Phenological Description Ontology (PPDO), and more.... We love the FAIRness evaluation service, O'FAIRe.

Catherine Roussey - INRAE, MISTEA lab

I’m using BioPortal to browse and search different ontologies and vocabularies such as NDF-RT and SNOMED CT. I find codes for terms and restrictions on terms and I then copy them into clinical guideline representations so that I can use standard terminologies.

Mor Peleg - University of Haifa

The BioPortal is a referential and invaluable ressource for our research group. We use the BioPortal daily to browse medical ontologies, evaluate how they cover clinical data and could be used to structure and normalise them.

Adrien Coulet - Inria Paris, HeKA team

I am using AgroPortal to get a public access, regularly updated, to the LEXEAU ontology a bilingual water lexicon (...) which aim is a better intercomprehension of the water issues by the public and private stakeholders. The integration in AgroPortal and the alignements of LEXEAU with other ontologies facilitate the international dissemination and further realization of the project.

Jean-Louis Janin, French Académie de l'Eau

Be part of a community

  • BioPortal
    The world's most comprehensive repository of biomedical ontologies
  • SIFR BioPortal
    A repository for French biomedical terminologies and ontologies
  • AgroPortal
    A vocabulary and ontology repository for agronomy and related domains
  • EcoPortal
    The LifeWatch ERIC repository of semantic resources for ecology and related domains
  • MedPortal
    A repository for Chinese biomedical terminologies and ontologies
  • MatPortal
    The ontology repository for materials science
  • IndustryPortal
    A common ontology portal for industry and related domains
  • EarthPortal
    A semantic artefact repository dedicated to Earth sciences
  • BiodivPortal
    A semantic artefact repository for biodiversity

Our sponsors

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  • LifeWatch ERIC image
  • BAM image
  • Fraunhofer Materials image
  • OntoCommons image
  • ENIT image
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