Beeceptor - Unblock yourself from API dependencies, and build & integrate with APIs fast. Beeceptor helps you build a mock Rest API in a few seconds.

Mimicry.rest - Create CRUD mocks in seconds and test frontend resilience with Chaos Mode. A lightweight, solo-dev tool for modern web development.

MockServer - Easy mocking of any system you integrate with via HTTP or HTTPS.

Mockoon - Mockoon is the easiest and quickest way to design and run mock REST APIs. No remote deployment, no account required, free and open-source.

Mockable - Quickly define some REST or SOAP endpoints and have them return json/xml (dummy) data.

MockAPI - MockAPI lets users mock up APIs, generate custom data, and perform operations on it using RESTful interface.