This guide shown you how to build chat server using Openfire 3.7.1 in ubuntu server 12.10. Openfire is a free and open source real-time collaboration (RTC) instant messaging server. It uses the only widely adopted open protocol for instant messaging, XMPP (also called Jabber). Openfire is incredibly easy to install and configure, but offers rock-solid security and performance. Openfire licensed under the Open Source Apache License.