Developers can use HttpWizard to issued arbitrary http request controlling headers and payload, and analyzing in details the response. This tool can transform the response in a nice view (formatted json, xml, images) or a raw mode in order to see what bytes has been returned from the server.
The tools let the user save predefined set of requests so that they can be re-issued again.
It is particularly useful to analyze the functionalities of a REST and oData services.