LDAPv3 Support — OpenLDAP supports Simple Authentication and Security Layer (SASL), Transport Layer Security (TLS), and Secure Sockets Layer (SSL), among other improvements. Many of the changes in the protocol since LDAPv2 are designed to make LDAP more secure.

IPv6 Support — OpenLDAP supports the next generation Internet Protocol version 6.

LDAP Over IPC — OpenLDAP can communicate within a system using interprocess communication (IPC). This enhances security by eliminating the need to communicate over a network.

Updated C API — Improves the way programmers can connect to and use LDAP directory servers.

LDIFv1 Support — Provides full compliance with the LDAP Data Interchange Format (LDIF) version 1.

Enhanced Stand-Alone LDAP Server — Includes an updated access control system, thread pooling, better tools, and much more.