Open Source C++ IRC Clients

Miranda IM is an open source, multi-protocol instant messaging client designed to be very light on system resources, extremely fast and customizable. A powerful plugin-based architecture make Miranda IM one of the most flexible clients on the planet.

X-Chat Aqua is X-Chat with an Aqua interface for MacOS X. X-Chat Aqua uses the irc engine from X-Chat, and is designed to look and feel like the GTK+ front end.

This is a c++ XDCC client with ajax webinterface!!

ZNC is an IRC bouncer with many advanced features such as a built-in web interface, persistent connection (detaching), multiple users, per channel playback buffer, SSL, IPv6, transparent DCC bouncing, and c++ module support, to name a few.

PlanetaMessenger.org is a Instant Messenger with support to all well known instant messenger networks including ICQ,MSN,AIM,Yahoo! and Jabber through a powerfull plugin engine. PlanetaMessenger.org support multiples look and feels, plugins and profiles.

Wraith is an open source IRC bot written in C++. It has been in development since late 2003. It is based on Eggdrop 1.6.12 but has since evolved into something much different at its core.

Anope Services are built off of the original Epona code written by Lara which is built off of IRC Services. These services have advanced the original Epona code and include new features such as Modules, Mysql, and Defcon Mode.

CSBot is an IRC bot for Windows that can publish Counter-Strike, Natural-Selection and Day-of-Defeat games on an IRC channel. CSBot also has lots of other features. Refer to the website for a full list.

Kopete is a flexible and extendable multiple protocol instant messaging system designed as a plugin-based system.

dxirc is simple IRC client

A multiplayer RPG that connects as a psuedo server to an IRCD. Built in the tradition of old BBS Door games such as LORD (http://en.wikipedia.org/wiki/Legend_of_the_Red_Dragon). Forest fights add experience and gold needed to best your master (gain level

This plugin allows winamp to talk to mIRC and Klient. You can have your irc client do things when the song changes in winamp. You can also control winamp from within your irc client.

This is a modification of the Markovsky IRC Bot. Extra code has been added so that the bot has the capability to not only speak in the distinctive dialects of Andrew Hussie's Homestuck Trolls, but can also switch between them at runtime.

Fire is a multi-protocol instant messenger client for Mac OS X based on freely available libraries for each service. Currently Fire handles AOL Instant Messenger®, ICQ®, MSN® Messenger, Jabber, limited IRC, Yahoo!®, and Apple Bonjour communications.

LostIRC is a simple, lightweight IRC client for X11 written in C++ to run on Linux/BSD, the goal of the first stable version is to be simple and as much keyboard controlled as possible.

Scripts and hub mods written to enhance OpenDCHub. The Hub-Security script filters unregistered users by country, and adds op commands and security features. Statistical and fun scripts are also available. Future development will shift towards ODCH mods

irc2dc provides intercomunication between users of DC++ hub and IRC channel

IRCBot is an IRC bot that connects to IRC and respond to commands.

J-Alice is a C++ implementation of an Alicebot clone. It can chat on console, irc and function as a mini-http server. Currently it runs on Linux, BeOS, Windows and Solaris with equal functionality.

Kashyyyk is full featured, open source, cross platform IRC client. It was originally written to replace HexChat on OS X. At the time, HexChat (a fork of XChat) had only had a single release on OS X, which was still in alpha. Kashyyyk is extremely small, the binaries and related libraries totaling around half a megabyte. Kashyyyk also has very few external dependencies, the official binaries statically linking all supporting libraries. Kashyyyk is natively available for OS X, Windows, and FreeBSD. Additionally, it can be compiled for Cygwin/X. When possible, Kashyyyk takes advantage of native OS capabilites, such as the OS X notification center. Kashyyyk uses the libfjirc library originally written for the Whittler IRC bot and the libfjnet wrapper written for TurboSphere. It has an FLTK-based GUI. Kashyyyk is intended to be cross platform and easily compiled. It is known to compile using Clang, GCC, Cygwin, Sun Studio, and MSVC 2013.

The Open Source Bot Project, or OSB, is an IRC bot written in C++ whose goal is to be as open and dynamic as possible. It will support dynamic module loading as well as a simple yet powerful scripting language. Even the base bot commands are just modules

Idiot is a superset of different projects. Most of them deal with IRC.

mIRC Collapsable Switchbar (McS) is an addon for mIRC 6.0x and adds functionality to mIRC that in my opinion should be an integral part of mIRC to begin with. McS allows you to keep your mIRC switchbar nice and neat and without the clutter that occurs f

Sanvirc is a script for KVirc that includes funtions like: nick identification, autojoin, defense, atack, bots management, away system, etc. At the moment works whis IRC-Hispano bots but is very easy to adapt to other servers.

A free IRC-based messaging client designed for communication over LAN. The program's look&feel is similar to popular IM clients'. Written in C++ and wxWindows GUI framework. Runs on Linux (GTK+) and Windows.