The attractive side of XML-RPC
XML-RPC is a neat way of hooking up processes on different computers and operating systems. Now I find there is a neat client for MacOSX too! You fill in the endpoint URL, the method name, and the parameters (using Javascript syntax). The client then shows you in separate tabs: the request XML, the response XML, and the response displayed as a property hash. Looks very handy for XML-RPC debugging.
My only request at this point would be a way to save & reload queries.