Open Source Windows IRC Clients

See https://pidgin.im/about/ for more information. Pidgin is an instant messaging program which lets you log in to accounts on multiple chat networks simultaneously. It runs on Windows, Linux, and other UNIX operating systems. Pidgin is compatible with the following chat networks out of the box: AIM, ICQ, Google Talk, Jabber/XMPP, MSN Messenger, Yahoo!, Bonjour, Gadu-Gadu, IRC, MXit, Novell GroupWise Messenger, Lotus Sametime, SILC, SIMPLE, MySpaceIM, and Zephyr. It is written in C and makes heavy use of GLib and GTK+. Finch is a command line instant messaging program. It also lets you log in to accounts on multiple chat network simultaneously, and it is compatible with the same chat networks as Pidgin. It is written in C and makes heavy use of GLib and ncurses.

Plugin for ChatZilla which monitors torrent IRC announce channels, downloads torrent files based on a user-defined filter, and then sends the torrent files to a local or remote torrent client. Supports several different private trackers.

Lost Bot is an IRC Mafia Game Bot coded in TCL. Users register and start off in a 2D city trying to exhort businesses, buying weapons and killing each other. The more respect you gain, the more powerful you are. It will contain a webserver.

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.

Halloy is an open-source IRC client written in Rust, utilizing the Iced GUI library. It aims to provide a simple and fast client for Mac, Windows, and Linux platforms

BitchX is an IRC client based on ircII/EPIC4. It includes many features that are usually relegated to scripts such as CDCC and flood protection -- you can just start it and go. Development was on hiatus for a while but is now resuming.

libircclient is a small but powerful library, which implements client-server IRC protocol. It has all features needed to create your own IRC client or bot, including multi-threading support, sync and async interfaces, CTCP/DCC support, colors, SSL connections and so on.

A graphical notification plugin for the instant message client gaim. Now hosted at http://plugins.guifications.org/trac

Effortlessly browse and search XDCC packs with this streamlined tool for mIRC and AdiIRC, crafted by Eric^^. Say goodbye to tedious channel interactions! Simply load the script (`/load -rs xdccv.mrc`) and let it build a comprehensive database while you idle. Then, use the commands `/xdccv` or `/xdccs` to find your desired files. Keep it alive. Make it better. Compatible with Windows 10/11 and Linux via WINE. Get the latest updates and source code here: https://pastebin.com/HUmDgd0g

Miranda NG is a successor of a popular multi-protocol instant messaging client for Windows, Miranda IM. Very light on system resources and extremely fast. Supports Em-LAN Facebook, Gadu-Gadu, ICQ / MRA, IRC Internet Relay Chat, Jabber XMPP, MinecraftDynmap, Omegle, Sametime, SkypeWeb, Steam, Tox, Twitter, and VKontakte. Linux is not a natively supported operating system, but Miranda is known to run on Linux under Wine. PluginUpdater is responsible for keeping your Miranda up-to-date. It checks for updates for all installed plugins and other components like icon sets and langpack regularly (depending on its settings) and performs updating automatically.

A complete rewrite of the mobile java irc-client WLIrc. (http://wirelessirc.sourceforge.net) Aims to be more responsive and use less memory maintaining the current gui and looks.

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.

Nested commands, easy configuration, and an incredibly flexible and easy-to-use plugin system distinguish Supybot from other IRC bots. There simply isn't a more flexible or easier to use IRC bot!

oidentd is an RFC 1413 compliant ident daemon that runs on Linux, FreeBSD, OpenBSD, NetBSD, DragonFly BSD, and some versions of Darwin and Solaris. oidentd can handle IP/NAT masqueraded connections on many operating system kernels. oidentd has a flexible mechanism for specifying ident responses. Users can be granted permission to specify their own responses, and different responses can be sent depending on host and port pairs. oidentd features a capability-based permission system that allows system administrators fine-grained control over which functionalities may be used by each user.

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

Kraken is a continuation of the Openfire IM Gateway plugin, but in a way that works for any XMPP server. It provides a way for XMPP users to log into, and communicate through, their legacy IM accounts such as AIM, ICQ, MSN, Yahoo, and friends.

IRC client optimized for downloading mp3 music, videos, images and more. Easy to install with a startup wizard and an intuitive user interface with many customizable options.

ZxoR Gatherbot is GNU GPL Licensed, IRC MSL Based, Counter-Strike 1.6 Multi-Gatherbot system.

This is an IRC bot written in Delphi. It has a modular structure, based on a small kernel and some plugins all around. A plugin can be a script engine or any hard coded irc events handler. Those plugins can be written in any language (Delphi, C++/C...)

Bot Sentry is a Pidgin (libpurple) plugin to prevent Instant Message (IM) spam. It allows you to ignore IMs unless the sender is in your Buddy List, the sender is in your Allow List, or the sender correctly answers a question you have predefined.

pisg is a smart Perl script which generates nice looking statistics out from IRC logfiles. It's a funny thing for the users of your channel :)

Proxy Studio (mSL) mIRC script for scanning Proxys / Socks (4/5) Easy to use New in v1.5: Fixed many bugs/Dialogs Get ROCK Solid VPN - http://PoPVPN.Tk

X-Chat is an IRC (Internet Relay Chat) program for Linux and Windows.

TLLiberIRCd is a professional commercial IRC chat server that anyone can get running in minutes — no programming, no compiling source code, and no technical background required. Just download the installer for your operating system and you are live. Everything is managed from your web browser through the built-in Web Admin panel. No command line needed for day-to-day use. Nine powerful services come included right out of the box: NickServ, ChanServ, MemoServ, HostServ, OperServ, RootServ, StatServ, HelpServ, and PoliceServ — no extra downloads or setup needed. Additional features include permanent channels that stay open when empty, overflow redirects, TLS encryption, and server linking. Available for Linux, macOS, FreeBSD, and Windows. Backed by real customer support and active commercial development. A free 60-day trial is included with every download — no account or credit card required. Plans start at just $15 a year. https://www.tlliberircd.org

A pidgin plugin that allows user to assign global hotkeys (e.g. Ctrl+Alt+g) for togglling buddy list and reading queued message. When "Toggle List" hotkey is enabled, it makes the buddy list hidden from your taskbar and task switcher (similar to ICQ).