The Common Core Ontology Repository holds the current released version of the Common Core Ontology suite.

Official repository for Semantic Web for Earth and Environmental Terminology (SWEET) Ontologies

YANGDB Open-source, Scalable, Non-native Graph database (Powered by Elasticsearch)

The official SNOMED CT OWL Toolkit. OWL conversion, classification and authoring support.

📚中国近代革命历史知识图谱系统 🌈提供了知识图谱可视化、知识检索、关系检索、时空检索、时空演化、语料检索、知识抽取、知识问答等丰富而有效的中国近代革命历史知识服务。

Bayesian OWL ontology merging

Maintenance and development of the EBUCorePlus

Your climate action is here 🌎 Our API is a source for learning how climate change personally affects you and the things you care about most. Additionally, it will teach a scientifically proven method for communicating to others that climate change is a personally relevant issue to inspire action.

Events and Situations Ontology

Protégé Desktop plugin for defeasible reasoning in OWL ontologies using the style of Kraus, Lehmann and Magidor

Sequoia is a consequence-based OWL 2 DL Reasoner supporting multithreaded reasoning

BDRC Ontology Schema

This is a curated semantic version of the PASCAL-Part dataset for part-based object detection. Objects are aligned with WordNet and Yago concepts. The dataset is both in PASCAL-Voc and RDF format.

Rust interface for the RDFox database

This project uses the OWLApi to create an OWL ontology, in RDF/XML format, based on the content of standard SNOMED CT RF2 files.

Een informatiemodel en objecttypenbibliotheek (né ontologie) voor assetbeheer van de openbare ruimte

專利本體論自動建置系統

Protégé plugin displaying inferred taxon constraints

MAtchmaking Features for mAchine Learning Data Analysis

{g0-Builder J2RM}: KG construction package