FusionDirectory is only a web interface in front of Directory using LDAP v3 protocol.
Thanks to this, the user only see the informations stored inside the directory not the container, attributes names or other technical informations which could complexify informations and configuration management
Resara Server Community Edition is an open source Linux domain controller and file server solution based on Samba4. It is incredibly easy-to-use and requires no Linux expertise to setup or maintain. Please download and try for yourself! Get involved!
Centrify Express is a comprehensive suite of free Active Directory-based integration solutions for authentication, single sign-on, remote access, file-sharing, monitoring The #1 Choice for Active Directory Integration and cloud security for cross-platform systems. It is the quickest and most proven solution for integrating UNIX, Linux and Mac systems with Windows, and delivers more functionality and more to upgrade to when compared to other free offerings.