Windows IRC clients

graphical multi-protocol instant messaging client

mIRC is an Internet Relay Chat (IRC) client for Windows with an integrated scripting language allowing the creation of extensions. The software was first released in 1995 and has since been described as "one of the most popular IRC clients available for Windows." mIRC is shareware and requires payment for registration after the 30-day evaluation period.

XChat (originally styled X-Chat) is an Internet Relay Chat client. It has a tabbed document interface or tree interface, support for multiple servers, and numerous configuration options.

instant messaging application

Irssi ( ) is an Internet Relay Chat (IRC) client program for Linux, FreeBSD, macOS and Microsoft Windows. It was originally written by Timo Sirainen, and released under the terms of the GNU GPL-2.0-or-later in January 1999.

instant messenger for Microsoft Windows, free software

WeeChat (Wee Enhanced Environment for Chat) is a free and open-source Internet Relay Chat client that is designed to be light and fast. It is released under the terms of the GNU GPL-3.0-or-later and has been developed since 2003.

third-party closed-source freeware multiprotocol IM client

KVIrc is a graphical IRC client for Linux, Unix, Mac OS and Windows. The name is an acronym of K Visual IRC in which the K stands for a dependency to KDE, which became optional from version 2.0.0. The software is based on the Qt framework and its code is released under a modified GNU General Public License.

HexChat is a discontinued Internet Relay Chat client and is a fork of XChat. It has a choice of a tabbed document interface or tree interface, support for multiple servers, and numerous configuration options. Both command-line and graphical versions are available.

graphical, distributed, cross-platform IRC client

Instantbird is a discontinued cross-platform instant messaging client based on Mozilla's XULRunner and the open-source library libpurple used in Pidgin. Instantbird is free software available under the GNU General Public License. Over 250 add-ons allow user customization of, and addition of, features. On October 18, 2017, Florian Quèze announced that "... we are stopping development of Instantbird as a standalone product."

Smuxi is a cross-platform IRC client for the GNOME desktop inspired by Irssi. It pioneered the concept of separating the frontend client from the backend engine which manages connections to IRC servers inside a single graphical application.

graphic IRC client by Microsoft

Bersirc is a discontinued open-source Internet Relay Chat client for the Microsoft Windows operating system. Linux and Mac OS X versions were "in development". Bersirc uses the Claro toolkit, which aims to provide an interface to native windowing systems and widgets on all operating systems. Microsoft .NET and Qt toolkit ports were also planned. The final version of Bersirc was 2.2.14.