Openfire (Wildfire, Jive Messenger) is an instant messaging (IM) and group chat server that uses XMPP server written in Java. Developed by Ignite Realtime
License: Open Source
Openfire is user-friendly and well-suited for small to medium-sized deployments but may struggle with scalability in larger environments. In contrast, ejabberd offers robust scalability and advanced features, making it ideal for enterprises and large-scale applications.