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Step CIhttpYac
Freemium

The open-source runner is free; the site also lists paid options and demos.

 Free

Free to use.

Command line Command line
  • Tests REST, GraphQL, gRPC and SOAP in one format
  • Imports from OpenAPI, Postman and Insomnia
  • Plain-text request files that fit in version control
  • REST, SOAP, GraphQL and gRPC in one tool
  • No graphical interface for manual requests
  • Requires Node.js or Docker to run
  • No standalone graphical app; works through the CLI or VS Code
  • Scripting requires familiarity with Node.js
Downloadable app Downloadable app
Open source Open source
License not stated License not stated
Not stated if an account is needed No account needed
Works offline Works offline

Checked September 24, 2026

Checked September 23, 2026

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