Historia
   
   1988: CCITT X.500 -> Directory Access Protocol (DAP)
   
   1993: University of Michigan, Lightweight Directory Access Protocol (LDAP)
   
   OpenLDAP 1.0: agosto 1998
   
   LDAPv3: agosto 2000
   
   OpenLDAP 2.3: junio 2005
   
   OpenLDAP 2.4: octubre 2007
   
   OpenLDAP 2.4.11: 2008-07-16