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Swagger EditorTypeSpec
Free

Free to use in the browser.

 Free

Free and open source under the MIT licence.

Web Windows, Web, Command line
  • Edit OpenAPI definitions in the browser
  • Send live requests to the described API
  • Generates OpenAPI, JSON Schema and Protobuf from one definition
  • Much shorter than equivalent OpenAPI YAML
  • Focused on OpenAPI files rather than ad hoc requests
  • No saved request collections like a full API client
  • Another language for the team to learn
  • Generated output still needs review against your API conventions
Web application Downloadable app, Web application
Closed source Open source
License not stated License: MIT
No account needed No account needed
Not stated if it works offline Works offline

Checked September 24, 2026

Checked October 2, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.