ejabberd is an instant messaging server allows to transfer presence and status information between users connected to servers and support 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)
JEFFISHERETOO Giving the product ONE star because it doesn't support the legacy PPC, as Apple no longer does, is an abuse of the rating system. The developer is clear about their CPU support and giving it 1 star is simply wrong. What you should have done was left a comment objecting to the lack of PPC support but not rated the software's quality down because of it. (Version 2.1)