SSO through CAS

The Central Authentication Service (CAS) is the standard mechanism by which web applications should authenticate users.

CAS provides enterprise single sign-on service:

An open and well-documented protocol
An open-source Java server component
A library of clients for Java, .Net, PHP, Perl, Apache, uPortal, and others
Integrates with uPortal, BlueSocket, TikiWiki, Mule, Liferay, Moodle and others
Community documentation and implementation support
An extensive community of adopters


Binary releases may be downloaded from here.