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Mockbin vs httpbin: catalog facts
Mockbin	httpbin
Free Free and open source, with no sign-up.	Free Free to use online and free to self-host as open source.
Web	Web, Self-hosted
Custom status, headers and body for a mock endpoint Generates mocks from an OpenAPI 3.x document	Predictable endpoints that echo back what a client sent Public instance needs no setup or account
Fixed responses rather than programmable logic Losing browser storage loses the list of your bins	Public instance can be slow or rate limited under heavy use A test target only, not a client for sending requests
Web application	Web application, Self-hosted
Open source	Open source
License not stated	License not stated
No account needed	No account needed
Needs internet	Not stated if it works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked October 1, 2026

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