Embodiments of the present invention relate to systems and methods for managing information concerning users of a network web site. The system includes a web server for providing access to various network resources, such as web pages and applications and an applications server coupled to the web server for running two or more protected applications, to which access is restricted to authorized users. The system also includes a customer profile and registration application for receiving user login information and authenticating users and providing single sign-on capability. The system further includes a user directory server for centrally managing information concerning users, a first database for storing user credentials and a second database for storing user profile information. User profile information and user credentials can be added, modified, deleted or retrieved by operations carried out within at least one of said applications.