During the API creating work, it is necessary to test API calls. We can do this in many ways. One of the good method could be just using browser to enter url in address bar. However using this method we can test only GET requests. Also there is problems with setting up headers.
Other method to test HTTP requests is using cURL format and appropriate software. This is a console program, so it is very extensible and powerful. However it is a console program and it is more complicated to use and we should manage request database on our own. It can be easier.
Fortunately it exists a program Postman. It is a software for all kind of HTTP request work. It can be installed as a standalone application and as a Chrome plug in.