2.1. Jabberd - The Jabber.org Jabber Server
The Jabberd server is a reference implementation for the Jabber protocol as defined by the Jabber Software Foundation. It is written in C and is covered by both the Jabber Open Source License(JOSL) and the GNU Public License(GPL). The Jabberd project has its own documentation. (http://jabberd.jabberstudio.org/howto.html).