The most popular, powerful, and stable Macintosh IRC client. It's extremely easy to use and supports just about all standard IRC commands, as well as many nonstandard features. The interface is more elegant than Windows' mIRC, with color and graphics playing important roles. Simultaneous connections to multiple networks is supported, as is remarkably powerful AppleScript scripting. This venerable $15 piece of shareware should be installed on every Mac.

Mac users unfamiliar with IRC who are still looking to get in on the #everything action should download this immediately.