Mockoon and Postman logos side by side

Comparison between Mockoon and Postman's API mocking

Discover the differences between Postman's API mocking and Mockoon's desktop application and CLI mocking features

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Postman is an online platform and desktop tool enabling developers to design and test APIs. Postman also includes an API mocking feature integrated into their application. While not an API mocking tool first, it allows running cloud mock endpoints out of a collection of responses received while testing an API.

However, Mockoon provides a more powerful mocking experience by including more features out of the box. It is easy to use and has no learning curve. You can easily start using it and create your first mock API in under a minute. From a powerful templating system to generate dynamic and realistic mock data to a proxy mode to partially mock API endpoints, Mockoon takes API mocking to the next level. It also offers a CLI and Docker image to deploy your mocks anywhere and many customization options (status codes, dynamic headers, rules system, etc.).

What is API mocking for? Discover the different use cases or read our API mocking guide.

Postman (left) and Mockoon (right) UIs side by sidePostman (left) and Mockoon (right) UIs side by side

Features comparison

FeaturesPostmanMockoon
Offline/Cloud basedCloud only
Deployed on a postman.com subdomain
Offline (desktop application)
Deploy anywhere with the CLI and Docker image
CLI
A CLI and a Docker image are available
Proxy mode
Documentation
OpenAPI support
Documentation
Recording
Mocks can be created from previously called endpoints

Mockoon can create mock endpoints based on entering requests
Response rules
Simple matching algorithm

Advanced system of rules
Dynamic/realistic data
Basic fake data can be generated with dynamic variables

Advanced templating system to generate realistic fake data
File serving
Documentation
Custom headers
At endpoint's level

At endpoint's and server's levels
Supports templating helpers for dynamically generated headers
Customizable status code
Route regex
Documentation
GraphQL support
CORS
CORS is enabled on the remote server

Automatically answers 200 to OPTIONS pre-flight requests
Headers can be customized
Slow network/server simulation
At server's level

At server's and endpoint's levels