Postman is a collaboration platform for API development. It is a popular API client and it enables you to design, build, share, test, and document APIs.
Using the Postman tool, we can send HTTP/s requests to a service, as well as get their responses. By doing this we can make sure that the service is up and running.
Being originally a Chrome browser plugin, Postman now extends its solution with the native version for both Mac and Windows.