Yes, Postman has a free version that you can use. The Postman app can be downloaded and used for free on Windows, Mac, and Linux platforms. The free version has many features that make it useful for testing and developing APIs, including the ability to create requests, save responses, and collaborate with others.
There is also a paid version of Postman called Postman Pro that includes additional features like team collaboration tools, API documentation generation, and automated testing.
Check out the below video tutorial to know more about Postman technology -