a Domain Ontology rapiD DeveLopment Environment – OWL extension
Framework & GUI for Bayes Nets and other probabilistic models.
Java library which offers information contained in an OWL resource
Full-text index generator of OWL literals
Machine learning algorithm using OWL
Natural Language Processing (NLP) for the Masses
A OWL reasoning framework for the analysis of big biomedical data
A Java API for measuring OWL ontologies
Software to help automatic or manual realisation of ontologi alignment
Another free OWL/DL Reasoner
SPARQLINGui is a simple tool to test sparql inference queries
Ontology CASE Tool - Cartographie des connaissances et ontologies
OntoComP is a Protégé 4 plug-in for completing OWL ontologies
RSS Owl is a powerful application to organize, search and read feeds.