HaTTiP 1.0 - RESTful web services client Posted 3/22/2014 at 13:34 UTC in Mac by gnye@amdesign.net | Permalink | Tweet HaTTiP 1.0 is an HTTP web services client for the Mac for testing HTTP/RESTful web services that also supports the execution of scripts that can dynamically alter a request before it is submitted, allowing for such things as signature generation, header modification, and POST/PUT body generation.