Admin4 is a broad server management tool. It has plugins for maintaining LDAP directories, BIND DNS zones, IMAP servers and PostgreSQL databases. It's a Python and wxWidgets control center, for customization and easier addition of new plugins.
LDAP Account Manager (LAM) is a web-based frontend for managing user, group, configuration entries of an LDAP directory. It's intended to simplify common tasks and discovery, abstracts technical and query details; but still provides an integrate full LDAP browser. It works on Unix instances, Samba 3/4, Kolab 2/3, Zarafa, DHCP, SSH keys, and can manage multiple servers. It provides user profiles for managing accounts and groups, CSV imports, instanting quotas, PDF summaries, allows some user self
A full-featured web-based LDAPv3 client