Backends (short: BE) are the glue between your browser and an IRC server. A Mibbit backend is a java program (server) which keeps track of all the traffic between you and the network you are connected to. There are four BEs at the moment:
- chat.mibbit.com (full blown main IRC client server and load balancer)
- widget.mibbit.com (single network IRC client and load balancer to be used on your web page, used for ssl connections and premium widgets etc.)
Note: use only widget.mibbit.com on your web page, it automatically redirects to the best suited server.