Want to access SOAP service from your iPhone app? The following are the open source framework that can be used.
WSDL to Objective C
The project is hosted on Google code at http://code.google.com/p/wsdl2objc/
This is an online service which takes in the location of WSDL file and generated SOAP artifacts for the same in Objective C.
CSOAP is a client/server library for generating SOAP artifacts in C.