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MockServer vs WireMock: catalog facts
MockServer	WireMock
Free Free and open source with no SaaS account needed.	Freemium The core engine is free and open source; WireMock Cloud has a free tier and paid plans.
Self-hosted, Command line	Web, Self-hosted, Command line
Mocks and proxies HTTP up to HTTP/3 plus gRPC Records and replays real traffic	Flexible request matching and response templating Record and playback of real service traffic
Aimed at developers and test setups rather than manual API exploration Configuration takes some learning for complex scenarios	Standalone mode needs Java or Docker Collaboration features are in the paid cloud product
Downloadable app, Self-hosted	Downloadable app, Self-hosted, Hosted service
Open source	Open source
License not stated	License not stated
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 24, 2026	Official website Full listing and sources Checked September 24, 2026

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