PyWPS instance
PyWPS 3.2.1: http://wps.grid.unep.ch/cgi-bin/pywps.cgi?service=wps&request=GetCapabilities
PyWPS-SOAP: http://wps.grid.unep.ch/cgi-bin/pywps-soap.cgi?wsdl

52north instance
52 north WPS 3.3: http://wps.grid.unep.ch:8080/wps/WebProcessingService?Request=GetCapabilities&Service=WPS