Openfire

Openfire (previously known as Wildfire, and Jive Messenger) is an instant messaging (IM) and groupchat server that uses XMPP server written in Java and licensed under the Apache License 2.0.

Web-based administration panel

Most administration of the server is done through a web interface, which runs on the ports 9090 (HTTP) and 9091 (HTTPS) by default. Administrators can connect from anywhere and edit the server and configuration settings.

Features

Openfire supports the following features:

The proprietary extension to Openfire allows multiple server instances to work together in one clustered environment. This extension is now open source as well (but depends on Oracle Coherence, a commercial product). There is also an open-source clustering plugin based on open-source Hazelcast technology.