There are two different SOAP implementations for Knopflerfish, the Axis one and the kSOAP one.
The Knopflerfish Axis port is the oldest and largest one. The following subdirectories are part of it:
More information is available here: axis.html
The kSOAP implementation is smaller than Axis. Only the following subdirectories are part of it:
More information is available here: http://knopflerfish.org/remote_howto.html
Full information on the knopflerfish project can be found at http://www.knopflerfish.org.