Mock an API without writing a backend

I need to fake an API

• BeeceptorFree tier2 uses

  Mock an endpoint with matching rules straight from the browser; the free plan caps daily requests

  verified today

• json-serverOpen source

  Turns a plain JSON file into a real REST API locally — ideal before the backend exists

  verified today

• JSONPlaceholderFree

  Zero-setup fake REST API for demos; the data is fixed and writes are only pretended

  verified today

• MockAPIFree tier

  Define a schema in the UI and get a persistent hosted API; the free tier limits project count

  verified today

• MockoonOpen source

  Desktop app plus CLI for local mock servers; no account and works fully offline

  verified today

• Webhook.siteFree tier2 uses

  Instant URL that records every request; free URLs expire, so never wire one into something lasting

  verified today

• WireMockOpen source

  Heavier JVM mock server, but unmatched at request matching and stubbing awkward edge cases

  verified today