It looks like Hermes JMS is no longer maintained. I was wondering if the source is available anywhere. It appears that only the jar files are available sourceforge. We are planning on using SoapUI to test some XML services exposed through ActiveMQ. We are concerned that we will painting ourselves into a corner if there is neither active maintenance or source. I looked for alternatives to Hermes.
It seems that JMSToolbox may be a long term solution, but the support for SoapUI and ActiveMQ have not matured yet. Any suggestions for other solutions would also be appreciated.
You could use Apache Camel (http://camel.apache.org) to write a test harness. It has good support for testing & ActiveMQ.