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Microcks vs Mockoon: catalog facts
Microcks	Mockoon
Free Free and open source.	Freemium The desktop app and CLI are free and open source; Mockoon Cloud is a paid add-on.
Self-hosted	Windows, macOS, Linux, Command line
Mocks REST, gRPC, GraphQL and event-driven APIs Tests implementations against API contracts	No account or remote deployment needed Imports OpenAPI specifications
Needs a server or cluster to run More setup than a desktop API client	Focused on REST APIs Hosted deployments require the paid cloud service
Self-hosted	Downloadable app
Open source	Open source
License not stated	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.