Quest Software has launched Quest Identity Manager for Unix as freeware to streamline the management of local Mac/Unix/Linux users and groups. With it you can report on key identity and group information across Unix/Linux systems and assess the readiness of systems for advanced functionality such as Active Directory bridge technologies.
Quest Identify Manager offers a bird’s eye view of all local Unix accounts and system parameters, enabling administrators to determine which systems are ready for advanced functionality offered by Active Directory bridge technologies such as Quest Authentication Services. The web-based console ties identity related tasks together for a centralized point of management that can be run from any Mac, Windows Unix or Linux platform and any of the most common browsers.
You can try Identity Manager by going here: http://www.freeunixiam.com/ .