PJIRC is a full-featured Java-based IRC client
The IRC's Talking Robot
[ Please read https://sourceforge.net/p/darkbot/news/2014/01/darkbots-revitalization/ ] Darkbot is a portable IRC chat robot written in the C language that can be taught responses to user inquiries, and even have conversations with them. Darkbot was originally created by Jason Hamilton as an aid for help channels on Intenet Relay Chat.
This project will start out as a regular IRC-client for windows, and will hopefully evolve to something even better than mIRC ;-)
Hattbot is an IRC bot project for the hattrick online game. It permits to view severals infos about teams, players, players evolution, live match..
JChatIM is an instant messaging (IM) system written in Java with support of smileys and skins
Lulea is a new IRC daemon fully portable and fully object oriented.
The Open Descent Foundation (ODF) is a community for developers, who want to help to create open source programs, tools, etc. for the famous games Descent1, -2 or -3. Everyone can join the ODF if he accepts the idea of writing open source programs.
Palin is a Python IRC library used to develop either IRC clients, or IRC bots or anything other related to IRC. Its name comes from Michael Palin, one of the famous Monty Python.
Samantah est un service IRC écrit en Tcl. Son atout est qu'il extensible via des scripts Tcl, vous pouvez développer vos applications/services directement avec un système de scripts facilement maitrisable et intuitif.
Tcldrop is basically a clone of the Eggdrop IRC bot, but is being written purely in Tcl. The intention is to write a much more scriptable bot than Eggdrop is. It will run stand-alone or from any Tcl-enabled application (Tcl v8.5+).
French translation of the well known IRC client irssi