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. Get working mock REST APIs in seconds with an intuitive and easy-to-use interface and run them everywhere with the CLI.

Mockoon offers you complete flexibility when creating your mocks: custom statuses, route and global headers, file serving or body editor, HTTPS, etc. Compatible with the OpenAPI specification, Mockoon integrates perfectly with your existing applications and API design workflow.

Go beyond mocking with advanced features and tackle the most complex situation with HTTP requests recording, proxying, integration testing, etc.