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TestMace vs EchoAPI: catalog facts
TestMace	EchoAPI
Free Distributed as freeware.	Freemium Usable without an account, with paid plans listed on the pricing page.
Windows, macOS, Linux, Command line	Command line
Graphical test editor alongside JavaScript tests Variables, authentication and API import	Works without logging in and offline Runs Postman scripts
Closed source The site gives no release dates or changelog	Closed source Some features are tied to paid plans
Downloadable app	Downloadable app
Closed source	Closed source
License: Freeware	License not stated
Not stated if an account is needed	No account needed
Not stated if it works offline	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.