The LDAP Tool Box project provides a set of LDAP-related applications, administrative tools, and other utilities. They have just announced a new Service Desk tool, which is a web application for administrators that supports viewing and managing accounts in an LDAP directory server. According to the announcement for the 0.1 release, this includes the following functionality:

• Displaying entry attributes and account status
• Verifying a user’s current password
• Updating a user’s password and setting a flag to require a password reset
• Unlocking an account
• Indicating whether an account’s password is expired

Note that since some of these operations are not standardized, it’s likely the case that they are only available for certain types of directory servers.