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Mockbin vs Request Catcher: catalog facts
Mockbin	Request Catcher
Free Free and open source, with no sign-up.	Free Free to use in the browser.
Web	Web
Custom status, headers and body for a mock endpoint Generates mocks from an OpenAPI 3.x document	Choose a subdomain and start receiving requests immediately Catches requests sent to any path on the subdomain
Fixed responses rather than programmable logic Losing browser storage loses the list of your bins	Only records requests; no responses, transforms or workflows Captured traffic passes through a public third-party service
Web application	Web application
Open source	Closed source
License not stated	License not stated
No account needed	Not stated if an account is needed
Needs internet	Needs internet
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 23, 2026

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