ActiveSOAP

ActiveSOAP is a lightweight & easily embeddable REST and SOAP stack based on StAX with support for WS-Addressing and WSIF. ActiveSOAP uses StAX (the Standard API for pull parsing) to implement the SOAP protocols and then it delegates to plugin Handler objects for the heavy duty processing of the XML payloads. This means that you only need to pay for what you need; use fast pull based event parsing or full data binding mechanisms like JAXB or XStream or DOMish APIs like XMLBeans when they make sense. ActiveSOAP home is here.