WSO2 Web Services Application Server (WSAS) , the enterprise ready Web services
engine powered by Apache Axis2. WSAS is a Java runtime for hosting services & runs
standalone or in conjunction with Apache Tomcat, IBM WebSphere, BEA
WebLogic, JBossAS and any other servlet container. WSAS makes it easy to
develop, deploy and manage services using a graphical management console.

WSO2 WSAS is an open source product released under the Apache Software
License 2.0.

http://wso2.org/forum/thread/2752 [1]

Enjoy WSO2 WSAS!.