I'm happy to announce the release of mod_auth_tkt 2.0.1, the first full release of mod_auth_tkt in a couple of years. The 2.0.x release includes numerous enhancements and bugfixes, including guest login support and full support for apache 2.2.
mod_auth_tkt is a lightweight single-sign-on authentication module for apache, supporting versions 1.3.x, 2.0.x, and 2.2.x. It uses secure cookie-based tickets to implement a single-signon framework that works across multiple apache instances and servers. It's also completely repository agnostic, relying on a user-supplied script to perform the actual authentication.
The release is available as a tarball and various RPMs from the mod_auth_tkt homepage.