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Ontology Viewer

visualstudio.comOther dev tools

PulseGate's liveness check found it on 30 Sep 2026; it is registered on the VS Code Marketplace and has been in the index since 21 Aug 2026. How this is checked

Ontology Viewer is a VS Code extension for visualizing and editing OWL, RDF, RDFS, and SKOS ontology files. It provides an interactive schema diagram and supports common semantic web serializations, including JSON-LD, N3, N-Triples, Turtle, and TriG, for developers working with structured knowledge models.

Inferred · not functionally tested

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Overview

6 features

Purpose: Helps ontology developers inspect and safely modify semantic web files without leaving VS Code.

Inferred · not functionally tested

Audience: ontology engineers and semantic web developers

Inferred · not functionally tested

Functions: Unknown

Interfaces: API: unknown · MCP: unknown · CLI: unknown · Self-hosting: unknown

Recorded constraints: pricing: free · license: Proprietary · platforms: WEB · deployment: browser

Constraint provenance is unknown; confirm requirements with the publisher.

Record sources: unknown.

Ontology Viewer is an Other dev tools project. Inferred · not functionally tested: It helps ontology developers inspect and safely modify semantic web files without leaving VS Code. Inferred · not functionally tested: Ontology Viewer is a B2B product aimed at ontology engineers and semantic web developers. Basis unknown · not verified: Ontology Viewer costs nothing to use. Basis unknown · not verified: It runs on the web.

It is developed by Akihiro YAGASAKI, and it first shipped in 2026. Inferred · not functionally tested: Key capabilities include interactive schema diagram, OWL editing, and RDF editing.

Summary written by a language model from the project’s public pages.

Tasks: Inferred · not functionally tested

  • Interactive schema diagram
  • OWL editing
  • RDF editing
  • RDFS support
  • SKOS support
  • JSON-LD support

Topics: Inferred · not functionally tested

Tags
ontology-editorowl-visualizationrdf-toolssemantic-webvscode-extension

JSON profile · Text profile · Access guide

Built with & integrations

Connectors
vscode
Runs on
Browser

Trust & compliance

Public signals
HTTPSFree tierStore listing found

Indexing history

1

What PulseGate has recorded for this listing

  1. Indexed21 Aug · 12:20 UTC
    Ontology Viewer — OWL & RDF Visual Editor seen via VS Code Marketplace
    Source: VS Code Marketplace · Open

Frequently asked questions about Ontology Viewer

What is Ontology Viewer?
Inferred · not functionally tested: Ontology Viewer helps ontology developers inspect and safely modify semantic web files without leaving VS Code. It is catalogued under Other dev tools on PulseGate.
Who should use Ontology Viewer?
Inferred · not functionally tested: Ontology Viewer is a B2B product built for ontology engineers and semantic web developers.
Does Ontology Viewer have a free plan?
Basis unknown · not verified: Yes — Ontology Viewer is free to use.
What platforms does Ontology Viewer run on?
Basis unknown · not verified: Ontology Viewer runs on the web.
Is Ontology Viewer still active?
PulseGate's liveness check found it on 30 Sep 2026.
Who develops Ontology Viewer?
Ontology Viewer is developed by Akihiro YAGASAKI.
When did Ontology Viewer launch?
Ontology Viewer first shipped in 2026.

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