Rack-CAS is a simple Rack middleware to perform CAS client authentication. It works with any Rack-compatible framework such as Rails or Sinatra. Please check the offical documentation to learn how to use Rack-CAS.
phpCAS is an easy way to CAS-ify your PHP applications. There are plugins for many popular applications such as Drupal and Horde based on phpCAS. Please check the official examples to learn how to integrate phpCAS.
mod_auth_cas is an Apache 2.0/2.2 compliant module. It can be used to CAS-ify any application or static content running on Apache. Many Linux distributions include ready to use binaries of mod_auth_cas such as
libapache2-mod-auth-cas for Debian/Ubuntu via aptitude.
Pro tip: Set
/ to avoid redirect loops.