Ontology Management Tools

Ranking methodology

In development — no version effective yet.

Decision archetype: data · Scores are category-relative (P-01) and commercial relationships never affect rank (P-04).

Filters

Filters apply to structured facts only. Tools lacking a fact don't match its filter (P-02).

Semantic AI platform for building taxonomies, ontologies, and knowledge graphs from unstructured data.

ProtégéStanford University

Open source

Open-source ontology editor from Stanford for building knowledge models and class hierarchies.

Knowledge graph platform from TopQuadrant for managing ontologies, taxonomies, and governed enterprise data.