OpenAPI Spec Viewer is an offline desktop OpenAPI 3.0 and Swagger 2.0 schema explorer, JSON payload synthesizer, and static API documentation generator for Linux developers. An independent Linux desktop alternative to Swagger UI for browsing grouped REST endpoints, resolving nested $ref component pointers, generating request code snippets, and publishing self-contained HTML documentation without a browser.

Key Features:

• Endpoints & Paths Browser: Parses OpenAPI 3.0 and Swagger 2.0 JSON and YAML files into tag-grouped endpoint trees with colored GET/POST/PUT/DELETE/PATCH method badges, path and query parameters, request bodies, and response codes.
• $ref Schema Explorer & Sample Payload Synthesizer: Recursively resolves #/components/schemas and #/definitions $ref pointers (including allOf, nested arrays, and cycle protection) to synthesize typed JSON example payloads along with ready-to-run curl and Python snippets.
• Static HTML Docs & Inventory Exporter: Exports standalone dark or light HTML API reference pages and structured CSV endpoint inventory spreadsheets.

Disclaimer: OpenAPI Spec Viewer is an independent open-source project by TC Studio and is not affiliated with, endorsed by, or sponsored by Swagger UI.