The enterprise-class Open Source LDAP server for Linux. It is hardened by real-world use, is full-featured, supports multi-master replication, and already handles many of the largest LDAP deployments in the world. The 389 Directory Server can be downloaded for free and set up in less than an hour using the graphical console.

The current Stable 1.3.1 branch release is 1.3.1.5 released on July 31, 2013.

The current Stable 1.2.11 branch release is 1.2.11.22 released on August 1, 2013.

(This project was originally named the Fedora Directory Server.)