New to ontologies and knowledge graphs? Explorer mode lets you navigate your data visually — with an AI assistant to explain concepts and guide you as you go. Already an expert? Switch to a full modelling environment with Turtle editing, SPARQL, validation, and AI assistance.
Free to use · No account required · Desktop app coming soon
Features
From a blank canvas to a fully connected knowledge graph — in your browser or on the desktop, no setup required.
Two modes, one app. Explorer mode gives a clean, visual experience with no code in sight — ideal if you're new to ontologies. Switch to Expert mode for the full editor, querying, and advanced tools. Your data stays the same either way.
For those who prefer to work directly in code, a full-featured editor with syntax highlighting and auto-complete keeps you productive. The graph stays in sync as you type — no manual refresh needed.
Ask precise questions of your ontology and get instant results — find all instances of a concept, trace relationships, or verify your model is structured the way you think it is.
An intelligent assistant that understands your ontology and can answer questions, suggest improvements, and help you model concepts. Right-click any concept to get instant AI suggestions for related classes — all in plain English, no expertise required. Works with your existing Anthropic, OpenAI, or Gemini API key.
Drop in a CSV or Excel file and the AI maps your columns to classes and properties automatically. The fastest way to bootstrap an ontology from existing data.
Import from Turtle, RDF/XML, JSON-LD, CSV, or Excel. Export to Turtle, JSON-LD, and RDF/XML. Your ontology is always portable — no lock-in.
Who it's for
Whether you're a seasoned ontologist or someone who's just curious about what's hiding in their data, Ontology Studio meets you where you are.
Curious explorers
You have data and a feeling there's more to it than a spreadsheet shows. Explorer mode keeps things visual and approachable — no code, no jargon. Map what things are, how they relate, and what patterns emerge.
Knowledge engineers
A proper editor with a live graph, built-in querying, and a full code editor — without the overhead of enterprise tooling.
Data architects
Model your domain visually, import from spreadsheets, and export standards-compliant formats for downstream systems.
Researchers
Build and share ontologies and knowledge graphs for your domain without needing a developer. The AI assistant explains concepts as you go.
Plans
The web app is free to use with no account required. A native desktop app with offline support and local file management is on the way — as a paid subscription.
Web App
Free
No account required. Open your browser and start building.
No sign-up · No credit card · Always free
Desktop Studio
Subscription
Native app for Mac & Windows. Offline access and local file management.
Love the web app? You'll know what's coming.