Cost / License
- Free
- Proprietary
Platforms
- Online




Apps similar to MockServer include Mockoon, which is free and open source. Other options are Reqable, Webhook.site, WireMock and mockd. You're spoiled for choice with API Clients like MockServer: we list more than 25 alternatives for the web, Mac, Windows, Linux and self-hosting.




RequestBin.com is a modern request bin to inspect HTTP events. The application gives you a URL that collects requests you send to it so you can inspect them in a human-friendly way.

intercept.rest is a tool which helps to debug and mock REST APIs Similar to the Network tab in Chrome Dev Tools but works for any API, Mobile apps, webhooks, frontend etc.
APIFae is a CLI for API mocking: serve mocks from YAML, record real traffic into mocks, check mocks against a live API for drift, and patch drifted fields back.

Catch webhooks, collect form submissions, and test email templates — all in one platform. No backend code needed.
Coparrot is a web service that will return a response with data you specified. It's a mock server that you can use during development or testing without installing anything and without writing any configuration file.


With Mockaron, create mock REST APIs without server configuration or setup. Its intuitive and no-code app makes it super easy to get started.



Collect data from 3rd party applications through webhooks in real-time. Test your integration and secure it with the webhook proxy. Get your API endpoint up and running in 2 minutes.




Accelerate application development Quick and easy mock RESTful API and SOAP webservices. Generate from API definitions, instant deploy, collaborative build, and debugging tools for integration.
Writing unit tests can be hard and sometimes good design has to be sacrificed for the sole purpose of testability. Often testability corresponds to good design, but this is not always the case. For example final classes and methods cannot be used, private methods sometimes need...
A modern, solo-developer-built mock API platform to create CRUD resources instantly and test frontend resilience with integrated "Chaos Mode" simulations.




Proxy your API, choose which endpoints to mock in the cloud and inspect traffic, for free. Speed up your development and integrations tests.