jabberd  2.7.0
About: jabberd 2.x is the next generation of the Jabber/XMPP (Extensible Messaging and Presence Protocol) server.
  Fossies Dox: jabberd-2.7.0.tar.gz  ("inofficial" and yet experimental doxygen-generated source code documentation)  

jabberd - Jabber Open Source Server

Introduction

The jabberd project aims to provide an open-source server implementation of the Jabber protocols for instant messaging and XML routing. The goal of this project is to provide a scalable, reliable, efficient and extensible server that provides a complete set of features and is up to date with the latest protocol revisions.

The project web page:
http://jabberd2.xiaoka.com/