BitlBee allows users to talk to people on the major instant messaging and microblogging networks (including MSN, Google Talk, AIM, and Twitter) from within any IRC client by emulating an IRC server. Virtual channels are created with all of the user's contacts in them, who can be talked to in the channel or in a query. Also, one can participate in group chats and chat rooms like they were normal IRC channels.
BitlBee brings IM (instant messaging) to IRC clients
Brings XMPP to IRC, without nonfree Skype support and support for unsafe and dangerous for privacy protocols and with logger and OpenRC support