Openllet is an OWL 2 reasoner in Java, build on top of Pellet.

OWLTools

Ontology Lookup Service from SPOT at EBI

ONT-API (OWL-API over Apache Jena)

A community driven analysis of the Overwatch League API.

OWASP Ontology-driven Threat Modelling framework

OWL and Semantic Web toolkit for Common Lisp, used for construction and reasoning over ontologies and ontology-structured data

A jvm tool to convert any rdf-ontology to owl2-ontology

A lightweight Description Logic reasoner for large-scale biomedical ontologies

a set of command line tools for OWL files powered by owl-api

A native iOS library for working with Web Ontology Language (OWL) ontologies

Bayesian Ontology Reasoner

Reasoner for the description logic EL+.

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

An Object Oriented Programming (OOP) interface for Ontology Web language (OWL) ontologies.

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

Example of OWL API with HermiT, realized for the Semantic Web course at Politecnico di Torino (Italy)

An open source REST API written in Python to scrape and serve Foothill / De Anza course data 📒

Slims ontologies.