Application Delivery Management
Application Modernization & Connectivity
CyberRes by OpenText
IT Operations Management
This tool will check for when an OS X user's password will expire, and display it to the user. To use, simply change the first line where it says YOUR_LDAP_SERVER to the LDAP server you have, and save it as an application in Script Editor. It will then provide an easy way for a Mac user to see how many days they have left until their password will expire.
June 2006 upate: more user friendly.