The Central Authentication Service (aka CAS) is an open source lightweight framework that provides Web Single Sign On to big organizations (universities, agencies, corporations). It seems to be wildly used and seen as as much mature and reliable as the struts framework.

An existing server can benefit CAS WebSSO features if its technology is supported by a CAS client. So, please welcome Zope’s CAS User Folder, that SSOizes Zope within complex SSO infrastructures.