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json-server vs Mockbin: catalog facts
json-server	Mockbin
Free Free to install from npm.	Free Free and open source, with no sign-up.
Windows, macOS, Linux, Command line	Web
Mock REST API from a single JSON file No code needed for basic use	Custom status, headers and body for a mock endpoint Generates mocks from an OpenAPI 3.x document
v1 is in beta and may bring breaking changes Requires Node.js and npm	Fixed responses rather than programmable logic Losing browser storage loses the list of your bins
Downloadable app	Web application
Closed source	Open source
License not stated	License not stated
No account needed	No account needed
Works offline	Needs internet
Official website Full listing and sources Checked September 24, 2026	Official website Full listing and sources Checked September 23, 2026

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