Quassel IRC is a modern, cross-platform, distributed IRC client, meaning that one or more clients can attach to and detach from a central core, much like the popular combination of screen and a text-based IRC client, but graphical. In addition to this unique feature, it aims to be a comfortable chatting program.
Bip is an IRC proxy that supports replaying logged conversation and multiple clients on one IRC server connection. It has a handy logging directory structure. It is multi-user and has a flexible configuration. Some of its configuration can be changed at runtime with special IRC commands.
The Gordano Messaging Suite (GMS) is a highly flexible and reliable suite of messaging products. Customers can choose which components meet their needs from email, Webmail, collaboration, instant messaging, calendaring, SMS, and list server software all of which can be complimented by high level anti-spam, anti-virus, and archiving options.
Bouncer is an IRC session manager that can share a single server connection between multiple clients. This makes it possible to run the same IRC session at home or in your office. It also has a flexible plugin structure that allows you to record message and do logging in a centralized place.
iconvircproxy is a proxy for IRC users who want to talk in different character set environments. It is especially suitable for European users who occasionally talk on Japanese channels. It requires a fully UTF-8 compatible IRC client, and can talk in ISO-8859-*, ISO-2022-JP, SHIFT-JIS, and UTF-8 encodings. Encodings can be configured on a channel-by-channel basis, and heuristics are used to determine the encoding of each character of traffic.
BSW IRC Proxy translates the chat aspect of the proprietary binary protocol used in the Java client for the online gaming portal BrettSpielWelt.de to the standardized features of IRC (RFC 1459, 2810, 2811, particularly 2812, and 2813). It keeps a persistent connection to the client, server, and IRC client, in case one of them should vanish.
ProxIRC aims to be a proxy through which one can connect to an IRC server while also being able to connect to other instant messaging systems. Right now, partial support is offered for Microsoft's MSN using libMSN. Any IRC client can be used. Status of connected users in the MSN is made thanks to a virtual channel created by the proxy. When a user wants to talk to a friend from MSN, they /join #friend and talk. The rest of the channels are provided by a true IRC server and directly forwarded by the proxy. Only messages outgoing from the IRC client (which may be anyone) are parsed to look for information intended for the proxy. Information not useful for the proxy is forwarded to the IRC server.