HexChat

hexchat is an irc client based on xchat for linux , but unlike xchat it’s completely free for both windows and unix-like systems.

Free Open Source Windows Linux BSD MacPorts XQuartz Xfce

XChat for Linux

XChat is an IRC chat program for both Linux and Windows. It allows you to join multiple IRC channels (chat rooms) at the same time, talk publicly, private one-on-one conversations etc. Even file transfers are possible. .

Free Open Source Windows Linux

mIRC

mIRC is a popular Internet Relay Chat client used by millions of people, and thousands of organizations, to communicate, share, play and work with each other on IRC networks around the world.

Commercial Windows

irssi

Irssi is a terminal based IRC client for UNIX systems. It also supports SILC and ICB protocols via plugins.

Free Open Source Mac OS X Windows Linux BSD Cygwin

Quassel IRC

Quassel IRC is a modern, cross-platform, distributed IRC client based on the Qt4 framework.

Free Open Source Mac OS X Windows Linux Self-Hosted

Colloquy

Traditionally, chat clients on the Mac have been anything but glamorous. Colloquy is an advanced IRC, SILC & ICB client which aims to fill this void.

Free Open Source Mac OS X

AdiIRC

c#/csharp IRC CLient. AdiIRC stores all its settings in text files, this way you can grab the adiirc folder and put in on a usb device or external harddrive. Take all your settings and servers with you everywhere!

Free Windows Linux Mac Wine

X-Chat 2 for Windows

A freeware build of X-Chat for windows, as opposed to the official 30-day-trial shareware Windows build.

Free Windows

Kiwi IRC

A hand-crafted IRC client that you can enjoy. Designed to be used easily and freely. More friendly than other webirc clients giving the general public an easy option to connect to any IRC network.

Free Open Source Web Chrome Self-Hosted

Chatzilla

ChatZilla is a clean, easy to use and highly extensible Internet Relay Chat (IRC) client, built on the Mozilla platform, which provides all the usual features: multiple servers, a built-in list of standard networks, easy searching and...

Free Open Source Mac OS X Windows Linux Firefox SeaMonkey

IRCCloud

IRCCloud is an IRC client with a future. Stay connected, chat from anywhere, and never miss a message.

Freemium Android iPhone Web

Shout

What is it? Shout is a web IRC client that you host on your own server.

Free Open Source Web Self-Hosted

LimeChat

LimeChat is an IRC client for Windows, Mac OS X and iOS.

Free Open Source Mac OS X Windows iPhone iPad

Yaaic

Yaaic (Yet Another Android IRC Client) is a free and open source Internet Relay Chat (IRC) client for Android devices.

Free Open Source Android

Qwebirc

qwebirc is a web based AJAX IRC client.

Free Open Source Windows Linux Web Self-Hosted

Maid-IRC

A modern web IRC client. Built on Node.js.

Free Open Source Web Self-Hosted Node.JS

ZeroChat

An IRC-like internet chatroom hosted on ZeroNet, a distributed network. 0rc is a fully distributed website, and messages are shared through peers using the ZeroNet stack.

Free Open Source Windows Linux Web Mac Self-Hosted Python JavaScript ZeroNet

Tiny Tiny IRC

Tiny Tiny IRC is an open source AJAX-powered IRC client. The idea behind this being that you don't need either client software or even a stable network connection to...

Free Open Source Android Android Tablet

Mobile Node

Chat, date, find taxis, manage projects and tasks and more all in one app. Mobile Node is a feature rich app that lets users to communicate securely, and since no...

Free Android