HttpMaster project (hmpr file) exposes a large number of options to fine tune generated web requests, for example, to specify http method, values of http headers, global URL and query string values, content types, request encoding, and many more.

All these core features, along with many other options, give HttpMaster capabilities for thorough HTTP testing and debugging. HttpMaster can display and validate the most common REST formats XML, JSON, and HTML and also supports powerful dynamic parameters, request validation, and many other properties. HttpMaster is a debugging and testing tool for various HTTP applications and services. Because HttpMaster is a universal HTTP test tool it can be used with development. HttpMaster is a debugging and testing tool for HTTP applications, with special focus on REST web services, API applications, and websites.