HttpMaster is a debugging and testing tool for various HTTP applications and services. 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. All these core features, along with many other options, give HttpMaster capabilities for thorough HTTP testing and debugging. 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. HttpMaster also supports definition of dynamic parameters which can be be used to simulate variations of input data or to create global values for reuse across multiple requests. When executing web requests, HttpMaster allows you to monitor and review complete request and response data of each executed request. When working with HttpMaster, you will use intuitive user interface with tabs, descriptive icons, 'quick help' buttons and integrated help.