Net_LDAP3 is a successor of Net_LDAP2. Informations on this project are scarce, but it is required for Roundcube LDAP directory feature. Obtained by: git clone -b pear-Net-LDAP3-1.0.3 \ https://git.kolab.org/diffusion/PNL/php-net_ldap.git Net_LDAP3-1.0.3 tar -czf Net_LDAP3-1.0.3.tgz Net_LDAP3-1.0.3