Net::LDAP for Ruby (also called net-ldap) implements client access for the Lightweight Directory Access Protocol (LDAP), an IETF standard protocol for accessing distributed directory services. Net::LDAP is written completely in Ruby with no external dependencies. It supports most LDAP client feat...

ActiveDirectory uses Net::LDAP to provide a means of accessing and modifying an Active Directory data store.

ruby-ldapserver is a lightweight, pure-Ruby skeleton for implementing LDAP server applications.

Easily generate LDAP connections and queries without having to learn how to build an LDAP connection with ruby.

An extension of Authlogic to add LDAP authentication.