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SoapUI Open SourceTestMace
Free

The open source edition is free; the commercial ReadyAPI product is paid.

 Free

Distributed as freeware.

Windows, macOS, Linux Windows, macOS, Linux, Command line
  • Strong SOAP and WSDL support
  • Functional test suites with custom scripting
  • Graphical test editor alongside JavaScript tests
  • Variables, authentication and API import
  • GraphQL, gRPC and CI integrations are reserved for paid ReadyAPI
  • Website heavily promotes the commercial product
  • Closed source
  • The site gives no release dates or changelog
Downloadable app Downloadable app
Open source Closed source
License not stated License: Freeware
Not stated if an account is needed Not stated if an account is needed
Not stated if it works offline Not stated if it works offline

Checked September 23, 2026

Checked October 2, 2026

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