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Specmatic vs Microcks: catalog facts
Specmatic	Microcks
Freemium Core tool is downloadable from GitHub; the Studio, Genie and Insights platform is sold…	Free Free and open source.
Windows, macOS, Linux, Command line	Self-hosted
Generates contract tests and mocks from the same specification Supports OpenAPI, AsyncAPI and many message brokers	Mocks REST, gRPC, GraphQL and event-driven APIs Tests implementations against API contracts
Platform features beyond the core tool require contacting sales Assumes you maintain accurate API specifications	Needs a server or cluster to run More setup than a desktop API client
Downloadable app	Self-hosted
Closed source	Open source
License not stated	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 October 2, 2026

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