This is an LDAP integration for MODX Revolution, branched from ActiveDirectoryRedux (was modActiveDirectory).
LDAP is short for Lightweight Directory Access Protocol and was developed at the University of Michigan around 1993. There are a number of LDAP-enabled servers around, the most common of which is Microsoft’s ActiveDirectory; there’s an open source choice as well, known as OpenLDAP. ModLDAP especially designed for OpenLDAP.
In short: ModLDAP is a new extended modUser (modLDAPUser) with ability to authenticate MODX user against LDAP server.
MODX 2.4.x++ (tested). But also should work on MODX version 2.2.2++ or 2.3.x++ (need a feedback)