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Mockbin vs json-server: catalog facts
Mockbin	json-server
Free Free and open source, with no sign-up.	Free Free to install from npm.
Web	Windows, macOS, Linux, Command line
Custom status, headers and body for a mock endpoint Generates mocks from an OpenAPI 3.x document	Mock REST API from a single JSON file No code needed for basic use
Fixed responses rather than programmable logic Losing browser storage loses the list of your bins	v1 is in beta and may bring breaking changes Requires Node.js and npm
Web application	Downloadable app
Open source	Closed source
License not stated	License not stated
No account needed	No account needed
Needs internet	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.