ASP
ASP Web API ASP.NET Web API is a framework for building web APIs on top of the .NET Framework. Using ASP.NET Web API you can create a HTTP RESTful services. HTTP is not just for serving up web pages. It is also a powerful platform for building APIs
API
Postman Postman is a powerful API Testing tool, I've been using it for a while to test the API's I've been creating. It presents you with a friendly GUI for constructing requests and reading responses. The people behind Postman also offer an add-on package