Ontology Studio

RDF/OWL workbench with OWL 2 DL reasoning and SHACL validation

TypeScript
RDF

630 files · Knowledge · Updated 2 Nov 2026

$39USD

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Highlights

OWL 2 DL reasoning compiled to WebAssembly, alongside SHACL validation
Explicit release flow: validate, publish to TDB2/Fuseki, keep versions, roll back
Answers carry the SPARQL query, result table and evidence triples
Full source, private repository with commit history and a setup guide

A local workbench for building, validating and querying RDF/OWL ontologies. It is a customized distribution of the open-source Ontosphere editor: the browser-side authoring canvas stays, and a project workbench is layered on top where projects own their model, facts, SHACL constraints, competency questions, releases and Q&A evidence.

Authoring covers Turtle, JSON-LD, RDF-XML and TriG import, instance aggregation, stepwise linkage, clustering and multi-algorithm layout. Reasoning runs Konclude OWL 2 DL compiled to WebAssembly in the browser, SHACL validation reports violations, and repair suggestions are reasoner-verified. A draft is validated against SHACL plus every competency question’s expected result and only then published explicitly into a TDB2/Fuseki dataset, with historical releases kept for rollback.

Business questions are answered from the published release rather than from a language model’s memory: a read-only planner turns the question into SPARQL, executes it and answers with query and evidence citations, showing the exact query, the result table and the source triples next to the answer. Everything runs on the local machine with Fuseki bound to loopback.

Questions

What do I actually get?

The complete source of the project as a private GitHub repository, with its commit history, a setup guide and the architecture notes that ship with the code.

How is access delivered?

After checkout you are invited to the GitHub organisation that hosts the repositories. Accept the invitation and the project appears in your account.

Is this a subscription?

No. A single project and all-access are both one-time purchases. There are no seats, renewals or trials.

What happens when a project is updated?

Updates land in the same private repository you already have access to. Pull them whenever it suits you.