Postman is an open source API testing tool. It can work with any given endpoint even if it’s Restful or XML based. It has an easy to use interface to make the request to the given endpoints. It offers a rich variety of features. Creating a collection from requests, extracting data from any response and storing in a variable are the least you can do with Postman. https://loadium.com/blog/performance-testing-with-postman/