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The SLAPD (Standalone LDAP Daemon) and SLURPD (Stand-alone LDAP update replication daemon) originally evolved within the long-running project that developed the LDAP protocol.[1][2] It was developed at the University of Michigan, and was the first Lightweight Directory Access Protocol (LDAP) software.[3]

Today, many LDAP Server Implementations are derived from the same code base of the original SLAPD and/or evolutions of it.

University of Michigan[edit]

Tim Howes of the University of Michigan, Steve Kille of Isode Limited, Wengyik Yeong of Performance Systems International and Colin Robbins of Nexor authored the original LDAP specification.[4][5] In 1993, initial implementations of the LDAP standard were made by Howes at the University of Michigan, in the form of LDAPD as a proxy for the Quipu X.500 directory and SLAPD.

Netscape Communications Corporation[edit]

In 1996 Netscape Communications Corporation hired several of the project's developers, who then worked on what became known as the Netscape Directory Server.[3]

SLAPD Implementations[edit]

See also[edit]


  1. ^ "Ldapwiki: SLAPD".
  2. ^ "slapd".
  3. ^ a b "History of Directory Services".
  4. ^ RFC 1777 - Lightweight Directory Access Protocol (LDAP)
  5. ^ RFC 1778 - Lightweight Directory Access Protocol (LDAP)