The OntoPortal Alliance meeting 2026 will take place at Observatoire de Paris (Paris, France) from September 21st to 25th 2026.
A public session is organised on September 23rd (2pm to 5 pm).
The OntoPortal Alliance is a consortium of research and infrastructure teams dedicated to promoting the development of ontology repositories and semantic artefact catalogues based on the open, collaboratively developed OntoPortal software. Hereafter are the current public and open repositories built with the technology maintained by the Alliance.
OntoPortal is a generic technology to build ontology repositories or semantic artefact catalogues.
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.
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.
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).
All the semantic artefacts content hosted in an OntoPortal is indexed and can easily be retrieved.
List of active OntoPortal instances:
- Astronomy: Ontoportal-Astro
- Agriculture and Food: AgroPortal
- Biodiversity: BiodivPortal
- Biomedical: BioPortal, SIFR BioPortal, MedPortal
- Earth Sciences: EarthPortal
- Ecology: EcoPortal
- Material Science: MatPortal
- Industry: IndustryPortal