Mule is an Enterprise Service Bus (ESB) messaging framework. It is a scalable, highly distributable object broker that can seamlessly handle interactions with services and applications using disparate transport and messaging technologies.

Enunciate is a web service deployment framework (not another web service stack implementation). Enunciate provides a mechanism to build, package, and deploy your web service API. Enunciate compiles your source code and generates a web app that includes user-level documentation, a consolidated WSDL, SOAP endpoints, REST endpoints, JSON endpoints, client code, etc.