RDF Studio is a semantic data workspace for exploring, querying, visualizing, and modeling RDF knowledge graphs. Its SPARQL editor includes syntax highlighting, autocomplete, PREFIX folding, a query library, and execution history. A visual editor supports creating and editing OWL/RDFS classes, properties, and restrictions. The SHACL editor can browse, edit, and generate shapes, then validate them through a dashboard with maturity scoring. RDF Studio includes an Oxigraph store and connects to GraphDB, Virtuoso, Stardog, Amazon Neptune, Apache Jena Fuseki, and SPARQL 1.1-compatible endpoints. Saved queries can be published as REST API endpoints. AI features can propose ontology changes for review and generate SPARQL from natural-language questions. The desktop app runs on macOS, Windows, and Linux; the maker says it can work offline. A Northwind training environment includes a SPARQL query library, guided CRUD tutorial, OWL 2 ontology, and SHACL shapes. This is a preview release under active development, provided as-is and not intended for production or business-critical systems. The maker advises evaluation on test data; full OWL 2 RL closure at the stated 133-million-triple scale remains slow.

Who it is for

RDF Studio is aimed at ontologists, data engineers, data analysts, knowledge graph engineers, and technical leaders working with RDF knowledge graphs. It is for evaluation rather than production or business-critical use, according to its maker.

What is good

Includes a SPARQL editor and visual ontology editor.
Supports several external triple stores and SPARQL endpoints.
Desktop app runs on macOS, Windows, and Linux.
Can work offline, according to its maker.

What to know first

Preview release is not intended for production systems.
Maker advises evaluation on test data.
Full OWL 2 RL closure at the stated scale remains slow.

Verdict

RDF Studio brings query, ontology, and SHACL work into a single semantic data workspace. Its preview status and stated reasoning limitation make the maker’s test-data guidance important.

RDF Studio plans and pricing

All plans

Free Free Free semantic data workspace; no price or usage limits stated rdf-studio.com · 2 Oct 2026

Compared on knowledge graph software

Free plan: Yes
Ontology modeling: Yes
Semantic reasoning: Yes
RDF/SPARQL support: Yes
Graph visualization: Yes
Import formats: Turtle, N-Triples, JSON-LD, CSV, Excel, JSON, Parquet
Deployment: cloud
Query languages: SPARQL 1.1

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The record

Purpose

RDF Studio is a semantic data workspace for exploring, querying, visualizing, and modeling RDF knowledge graphs.

SPARQL

Its SPARQL editor supports syntax highlighting, autocomplete, PREFIX folding, a query library, and execution history.

Ontology editing

The visual ontology editor supports creating and editing OWL/RDFS classes, properties, and restrictions.

SHACL

The SHACL editor can browse, edit, and auto-generate shapes, and validate them with a validation dashboard and maturity scoring.

Triple stores

The product supports its built-in Oxigraph store and connections to GraphDB, Virtuoso, Stardog, Amazon Neptune, Apache Jena Fuseki, and SPARQL 1.1 compatible endpoints.

Desktop platforms

The maker says the desktop app runs on macOS, Windows, and Linux and works offline without an internet connection.

API

Saved SPARQL queries can be exposed as REST API endpoints.

AI features

AI can propose ontology changes and generate SPARQL from natural-language questions; its proposed ontology changes are drafts for review.

Training content

The Northwind training environment includes a SPARQL query library, a guided CRUD tutorial, an OWL 2 ontology, and SHACL shapes.

Security and compliance

The maker says each user gets an isolated database copy in the training environment; the page does not state a security certification or compliance standard.

Preview status

RDF Studio is described as a preview release under active development, provided as-is and not intended for production or business-critical systems; the maker advises evaluation on test data.

Known limit

The maker says full OWL 2 RL closure at the stated 133-million-triple scale is still slow and on the roadmap.

Intended users

The maker identifies ontologists, data engineers, data analysts, knowledge graph engineers, and technical leaders as users it serves.

Maker

The homepage credits the product as created by M Barbieri.

Price from

Free