University of Rennes1 uses CAS.
Technical contacts:
Using CAS 2.0 functionality.
25,000 students and 3,000 staff people.
Main CAS client applications are uPortal (thanks to Yale cas-client patched to use direct URLs to channels), IMP (patched with phpCAS), cyrus-imap (thanks to pam_cas), ))SunOne(( Calendar and other minor applications.