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WireMock vs json-server: catalog facts
WireMock	json-server
Freemium The core engine is free and open source; WireMock Cloud has a free tier and paid plans.	Free Free to install from npm.
Web, Self-hosted, Command line	Windows, macOS, Linux, Command line
Flexible request matching and response templating Record and playback of real service traffic	Mock REST API from a single JSON file No code needed for basic use
Standalone mode needs Java or Docker Collaboration features are in the paid cloud product	v1 is in beta and may bring breaking changes Requires Node.js and npm
Downloadable app, Self-hosted, Hosted service	Downloadable app
Open source	Closed 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.