The Consortium develops and maintains the MIT Kerberos [RFC4120] open-source software for the Apple Macintosh, Windows and Unix operating systems.
Find out what Kerberos is, who uses it and why: Documentation
Kerberos for Windows (KFW4.0): Downloads
Kerberos for Android: Downloads
Resources for developers: Developer Tools
The main Kerberos project material are maintained at Kerberos.org.