This page tries to list some of the software in the same realm of the Node Director.
LDAP / Directories
GOsa
is a free LDAP based user management tool of GONICUS GmbH.
LAM, the LDAP Account Manager is a tool for user management.
Ganymede is a portable directory management system (metadirectory).
System Configuration
Cfengine is a tool for
network wide automated system administration and configuration.