webMethods / JEE container

Does webMethods run in a JEE container. In particular does it run in WebSphere Application Server?

Some parts of the webMethods suite do, but most of them do not. In particular, Integration Server and My webMethods Server are standalone processes, with their own mechanisms for clustering and high availability.

Hope this helps

Webmethods does not run within the context of another app server, because it itself is an application server. It does have EJB support.
you have a JBOSS package for it