TestMaker is distributed under an Apache-style license and the modified TCPMon source is part of the distribution. You can download TestMaker at:
http://www.pushtotest.com/Downloads/downloadtmdoc.html
In the near future we plan to include an Axis Protocol Handler for using Axis to test SOA and Web Services for scalability, performance, and quality of service. Currently TestMaker uses Apache SOAP.
-Frank
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Frank Cohen, PushToTest, http://www.PushToTest.com, phone: 408 374 7426
Author of "Java Testing and Design: From Unit Tests to Automated Web Tests"
from Prentice Hall, details at http://thebook.pushtotest.com