Compare software

TypeSpecapic
Free

Free and open source under the MIT licence.

 Free

Free and open source under the MIT license.

Windows, Web, Command line Linux, Command line
  • Generates OpenAPI, JSON Schema and Protobuf from one definition
  • Much shorter than equivalent OpenAPI YAML
  • Keeps contracts as plain JSON in a Git repository
  • Offers CLI, TUI and desktop interfaces
  • Another language for the team to learn
  • Generated output still needs review against your API conventions
  • Collaboration depends on sharing a Git repository
Downloadable app, Web application Downloadable app
Open source Open source
License: MIT License: MIT
No account needed Not stated if an account is needed
Works offline Not stated if it works offline

Checked October 2, 2026

Checked October 8, 2026

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