ldapuseradd is a set of utilities that aid in the management and deployment of user accounts with support for plugins to manage requirements. The LDAP user management toolset uses a highly configurable user group profile system to distinguish targeted services. It is like an LDAP-based useradd/mod/del drop-in replacement with modular features. It scales well from small businesses to ISPs, hosting providers, and universities.
LDAP for Haskell provides an interface to the C LDAP API for Haskell programmers. With it, you can search and modify LDAP directories. The Haskell binding features automatic memory management and proper handling for binary data, and handles all marshalling into and out of C data structures for you automatically.
slapi-dnsnotify is a plugin for OpenLDAP or other LDAP servers. It watches for changes in the serial number of a DNS zone stored in the LDAP server, and notifies DNS slave servers to refresh their copy of the zone. It can also increment the serial number of a zone whenever changes in that zone are made.