# microsoft/Ontology-Playground

Free, open-source web app for learning about ontologies and Microsoft Fabric IQ. Explore a catalogue of pre-built ontologies, design your own visually, export as RDF/XML, and share interactive diagrams. Zero backend, fully static.

Repository: https://github.com/microsoft/Ontology-Playground
Canonical: https://ross.abutalabs.com/products/ontology-playground
Language: TypeScript
License: MIT
License Family: permissive
Last push: 2026-08-12T08:38:15+00:00

## Health v2 (maintenance only)
Score: 59/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 97, release rhythm 35, longevity 14
- inputs: {"age_days": 197, "days_push": 21, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2493, forks 321 (observed 2026-08-28T04:06:56.513594+00:00)

## What it is
A free, open-source static web application for learning about ontologies and Microsoft Fabric IQ. It combines a curated ontology catalogue, a visual ontology designer with full RDF/XML import/export, interactive Cytoscape.js graph diagrams, an embeddable viewer widget, and a structured learning hub — all with zero backend.

## Use cases
- learn ontologies and Microsoft Fabric IQ from scratch
- design an ontology visually without writing RDF by hand
- export an ontology as RDF/XML in the format Fabric IQ expects
- visualize an OWL or RDF ontology as an interactive graph
- browse example ontologies for domains like retail or healthcare
- import and edit an existing .rdf or .owl file
- embed an interactive ontology diagram on a web page

## When to choose
- You want a zero-install, browser-based playground to learn or teach ontology modeling
- You need to design or round-trip RDF/XML ontologies targeting Microsoft Fabric IQ
- You want shareable deep links and a single-script embeddable widget for interactive ontology diagrams

## When to avoid
- You need SPARQL querying, OWL reasoners, or a full semantic-web IDE
- You require backend persistence, user accounts beyond GitHub PR submission, or multi-user collaboration
- You manage very large enterprise ontologies beyond what a diagram-focused editor handles comfortably

## Facets
- artifact type: application
- maturity: active
- function: editor, data-visualization, serialization, developer-tools
- domain: education, developer-tools, data-science
- platform: browser
- tags: ontology, rdf, owl, rdfxml, knowledge-graph, semantic-web, microsoft-fabric, visual-editor, cytoscape, static-site, learning-platform, react, typescript, embeddable-widget

## Member repositories
- microsoft/Ontology-Playground (main) score 59

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:06:56.513594+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T02:27:36.498330+00:00, confidence not recorded.
  - readme: https://github.com/microsoft/Ontology-Playground (fetched 2026-08-28T04:06:56.513594+00:00, sha 65fda6b8d44a)
- Data as of 2026-08-30T08:39:29.467469+00:00.