Apigility
Apigility is an API Builder, designed to simplify creating and maintaining useful, easy to consume, and well structured APIs. Regardless of your experience in API building, with Apigility you can allow mobile applications, developer communities, and any other consumer controlled access to your applications.
Zend Studio's integration with Apigility allows you to seamlessly develop, test and document your web service projects constructing the back-end of your applications using the Apigility Editor.