the WSC.Desktop application is a Java desktop application that allows to connect to protected services. In order to get access to a service that uses the native WSS protocol to authenticate users, you create local proxies with WSC.Desktop. These proxies can be used by any GIS desktop application to request WSS-protected services.
Version 0.9 was just released and also supports a limited subset of the SAML 2.0 ECP Profile in the way used by the participants of the OGC Interoperability Shibboleth Experiment .
Please find a quick intro and the download link here .