389 Directory Server (formerly Fedora Directory Server) is a full-featured LDAPv3 compliant server. In addition to the standard LDAPv3 operations, it supports multi-master replication, fully online configuration and administration, chaining, virtual attributes, access control directives in the data, Virtual List View, server-side sorting, SASL, TLS/SSL, and many other features. The transactional Berkeley DB 4.2 is used as its data store and a full plug-in API allows developers to extend the the functionality of the server in many ways, and many of the core features of the server are already implemented using this API. The server is very mature, having started out as Netscape Directory Server.
Quest Identity Manager for Unix lets you remotely manage local users and groups on Unix, Linux, and Mac systems. It lets you find and manage existing local Unix users and groups throughout your environment through a single, centralized management console. You can create new local Unix users and groups throughout your environment from the same centralized management console. Local Unix user and group information can be securely managed over SSH. The management console can be run from Unix, Linux, Windows, or Mac platforms and any of the most common Web browsers. Quest Identity Manager for Unix can provide granular reports on Unix identity information, including local Unix users, local user conflicts, and all members of specific Unix groups. It can uncover rogue or unused local accounts.