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Mockbin vs JSONPlaceholder: catalog facts
Mockbin	JSONPlaceholder
Free Free and open source, with no sign-up.	Free Free for everyone with no signup or API key, supported by GitHub sponsors.
Web	Web
Custom status, headers and body for a mock endpoint Generates mocks from an OpenAPI 3.x document	No signup or API key needed Stable routes and responses since 2013
Fixed responses rather than programmable logic Losing browser storage loses the list of your bins	Fixed set of six resources with fake data Requires an internet connection; use json-server for a local equivalent
Web application	Hosted service
Open source	Closed source
License not stated	License not stated
No account needed	No account needed
Needs internet	Needs internet
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked October 2, 2026

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