OrgLDAP is an extensible LDAP user management application supporting groups, *NIX (POSIX, Shadow), Samba and other account types, SSH public keys and sudo roles. It includes a reusable extensible library and a web-based front-end.
PADUA is a pure Perl based LDAP DUA. It allows you to browse and edit a LDAP directory. It\'s shell based, so you can use it remotelly via a ssh session, if needed.