To connect to an IRC server, you will need a program called a client. There are many IRC clients available to you and which one you use depends on what operating system you run and which client you prefer. The following is a list of the most popular clients out there for UNIX, Windows, Macintosh, and OS/2. Try them and decide for yourself which one is best.

UNIX clients

ircii has been around almost as long as IRC itself. Although it lacks the color support of more recent clients many people still prefer it.

Based on ircii, EPIC still retains much of the look and feel of ircii. A plus is the support for ANSI color which makes for a more aesthetically pleasing client.

A highly configurable and extendable client with a separate codebase than that of ircii.

WeeChat is a fast, light and extensible chat client, with a text-based user interface.

Windows clients

Quite possibly the most popular Windows client around, mIRC is a nice client for both the experienced IRC user and those who are new to it.

A completely free cross-platform IRC client.

macOS clients

LimeChat is a free, easy to use client for macOS and iOS.

Textual is an extreme popular and powerful client for the Mac.

Colloquy is a glamorous and advanced IRC client for macOS and iOS.

OS/2, eComstation, ArcaOS Clients

A popular OS/2 client