Internet Relay Chat servers provide live text-based messaging simultaneously to large numbers of clients worldwide. The protocol allows for subdivision into chat "channels", and provides a standardized command language.
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A small (less than 200 KB) IRC server for Windows that is able to handle large numbers of users.
Popular commercial IRC server for Windows.
DALnet - Bahamut
Bahamut is an Internet Relay Chat Daemon (IRCd) designed for DALnet, one of the major IRC networks in the world.
The DALnet FTP archive. More than just IRCDs.
An open source multi platform IRC server developed with respect to internationalization and portability.
Windows IRC server with a reasonable amount of configuration/tweaking options. It also has VBScript support, a built-in HTTP server (IRCd information), IRC Services, DNS server, client graph program, many IRC tools and some IRC clients.
The Inspire IRC Daemon
InspIRCd is a C++ IRC Daemon for Linux and BSD systems. The system is modular and scalable and includes a module API.
A fully modular perl program which helps with securing a medium to large network against abusive users, bot attacks, and ban evasion.
Release notes, free download, documentation and FAQ for the (now historical) original Internet Relay Chat Daemon.
The IRC server software used on networks like EFnet, one of the original irc servers.
Corporate IRC/IRCX Server for internal messaging or public chat service. Includes an IRC Messenger and Flash chat client.
Old IRC Depository at cs-pub.bu.edu
Out of date distribution site; for historical purposes only.
The Perl IRC Daemon
News, view CVS tree, mailing lists, readme file, and source downloads.
An IRCd that combines the comfort of bahamut with the reliability of hybrid, adding user security related features.
The Undernet IRCD server.
One of the most feature-packed IRC servers in the world.