ADmitMac for CAC 2.0 for Mac can be downloaded from our website for free. This software for Mac OS X is an intellectual property of Thursby Software Systems, Inc. The program lies within Security Tools, more precisely General.
From the developer:
ADmitMac for CAC(AFC) securely integrates U.S. Department of Defense Common Access Cards (CAC) with Apple Mac computers. AFC provides a single sign-on environment, verifying a CAC against a centralized network authority. AFC obtains Kerberos tickets using CAC certificates, makes these tickets available to "Kerberized" applications, locks the computer upon removal of a CAC, and protects the computer from unauthorized use when it wakes from sleep.