pdirl (PHP Directory Listing) is a tiny directory lister program. It is meant to be better looking and more useful than the directory listings produced by Apache. It features searching, directory listing in subdirectories, breadcrumb navigation, translations, and MIME-type detection. It requires PHP 5.
Hayward's Free Intranet Employee Photo Directory is an employee photo directory Web application for intranets. It allows searching by name, skill, department, title, and tag, and features status updates and local times for people and organizations who are not in the visitor's time zone.