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TestMace vs SoapUI Open Source: catalog facts
TestMace	SoapUI Open Source
Free Distributed as freeware.	Free The open source edition is free; the commercial ReadyAPI product is paid.
Windows, macOS, Linux, Command line	Windows, macOS, Linux
Graphical test editor alongside JavaScript tests Variables, authentication and API import	Strong SOAP and WSDL support Functional test suites with custom scripting
Closed source The site gives no release dates or changelog	GraphQL, gRPC and CI integrations are reserved for paid ReadyAPI Website heavily promotes the commercial product
Downloadable app	Downloadable app
Closed source	Open source
License: Freeware	License not stated
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
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked September 23, 2026

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