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Mockoon vs json-server: catalog facts
Mockoon	json-server
Freemium The desktop app and CLI are free and open source; Mockoon Cloud is a paid add-on.	Free Free to install from npm.
Windows, macOS, Linux, Command line	Windows, macOS, Linux, Command line
No account or remote deployment needed Imports OpenAPI specifications	Mock REST API from a single JSON file No code needed for basic use
Focused on REST APIs Hosted deployments require the paid cloud service	v1 is in beta and may bring breaking changes Requires Node.js and npm
Downloadable app	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 23, 2026	Official website Full listing and sources Checked September 24, 2026

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