LDAP 2 SPARQL is a Backend to the widely used OpenLDAP server. It translates LDAP queries into SPARQL queries, asks a SPARQL endpoint and translates the result back to LDIF.
mx-LDAP-Suite
mx-LDAP-vacation: auto responses mail on vacation and reads the message from LDAP.
mx-LDAP-admin:Is a PHP based tool. It provides administration of LDAP-Directories
(Add, modify and delete user-accounts,groups,aliases,
samba-workstat