Chat it up in Emacs with IRC modes
Sometimes it seems like the Emacs editor has features that only operating systems have. You can, for instance, run an Internet Relay Chat client to chat online right from inside of Emacs.
A handful of GPLed Emacs IRC clients are available today as add-on modes -- and since GNU Emacs 22 was released last year, two of them come built right in. Here's a look at all of them.
The first of the two IRC clients to come installed with the latest major release of Emacs is Rcirc, which you start by typing M-x irc.
It's compact, written in a single file of less than 2,500 lines of code, and is described as a "default, simple IRC client."