The LAN Chat Client is a software for personal computer which functions as a chat software for you local area network. With this client chat you can connect to the server side of the program (different distribution).
The Online Chat Client is software for windows which functions as a client chat program over the IP. With program this you can connect to the server side of the program and chat with you friends over the IP, easily.
Y-Chat is an open-source, platform-independent chat-client for Yahoo written entirely in Java and currently supports most of the features of the regular chat client and more. It uses the jymsg9 lib from Sourceforge.
Pidgin is a chat program which lets you log in to accounts on multiple chat networks simultaneously. This means that you can be chatting with friends on MSN, talking to a friend on Google Talk, and sitting in a Yahoo chat room all at the same time.
Friendly Chat is a small yet rich chat client for Microsoft Windows platforms. The program is intended to be used on local area networks; however, it could also be used among Internet users provided that they all have direct IP addresses.
IRC Explorer is a FREE, easy to use, IRC (Internet Relay Chat) client. It can be used to connect to various IRC Servers and allows you to chat with other connected users in various topical Chat Rooms (also referred to as Channels).
One Revenge software creates rooms for chat between yahoo members. With this software you can look for your friends and contact them directly from the chat room. An easy to use program with options like : room booter, yahoo D/C booter .
Pexit is a multiprotocol, multiplatform instant messaging and chat client supporting ICQ(tm), AIM(tm), MSN(tm), Yahoo(r), IRC and RSS. Pexit's many features include whiteboards, multiprotocol chat rooms, chat history and alerts.