The OntoPortal Workshop 2025, hosted by Freie Universität Berlin at the Department of Mathematics and Computer Science, took place in Berlin from 29 September to 2 October.
Every year, the Workshop brings together members of the OntoPortal Alliance to discuss strategies and future activities. The OntoPortal Alliance is in fact a consortium of several research and infrastructure teams dedicated to promoting the development of ontology repositories, in science and other disciplines, based on the open, collaboratively developed OntoPortal open source software (Source: Clement Jonquet, Jennifer L Vendetti, Guillaume Alviset, Ilaria Rosati, John Graybeal, et al.. OntoPortal Workshop 2024 Report. INRAE; Stanford University. 2024. ffhal-04891214f).
These teams develop and maintain several openly accessible semantic artefact catalogues, or ontology repositories, in multiple domains. Among them, LifeWatch ERIC manages EcoPortal, the repository of semantic resources for ecology and related fields (https://ecoportal.lifewatch.eu).
This year, representatives from EcoPortal (Ilaria Rosati, Martina Pulieri and Michael Griniezakis), AgroPortal (Clement Jonquet, Imad Bourouche), EarthPortal (Christelle Pierkot and Hakim Allem), BiodivPortal (Naouel Karam, Ralph Schäfermeier and Adrian Paschke), BioPortal (Mark Musen, Jennifer Vendetti, Michael Dorf and Alex Skrenchuk), MatPortal (Alexandru-Aurelian Todor), OntoPortal-Astro (Baptiste Cecconi), CHPortal (Beatrice Markhoff, Louise Parkin), SocioPortal (Darren Bell), HSPortal (Anais Guillem) and other guests from NFDI (Roman Baum and Jakob Voss) joined the discussions.
Key topics included ontology development lifecycle, MOD-API implementation, new developments including generative AI and OntoPortal, and collaborations in projects and initiatives.









