ejabberd

ejabberd is an instant messaging server that allows users to transfer presence and status information between users connected to servers and supports real-time communications between them.

Features:

• (Mostly) XMPP-compliant
• Web-based administration
• Load balancing: can run in a cluster of machines
• Fault-tolerance: database can be replicated and stored on multiple nodes (nodes can be added or replaced on the fly)
• SSL/TLS support
• Multi-User Chat (MUC/conference)
• IRC transport
• Jabber user directory, based on users vCards
• Service discovery

New

• New module mod_client_state implements XEP-0352: Client State Indication
• New module mod_fail2ban to ban IPs that show malicious signs
• New option store_empty_body in mod_offline
• New option disable_sasl_mechanisms
• Improve option resend_on_timeout to support if_offline

Improved

• More robust offline server
• Better charset support in XMLRPC
• Some PEP issues fixed
• Bug fixes