JAIMBot is a modular architecture for providing services through an AIM client. It contains a generic AIM library and a Bot which uses this library to provide such services as Offline Messaging, Lists, Weather, Headlines, Stock Quotes, TV Listings, and an AI chatterbot. You can try out this project with a live AIM bot called JavaAIMBot. Send it "help" as an instant message to see what it can to.
JavaBot is a chat bot for the AOL Instant Messenger, MSN Messenger, and Yahoo! messenger systems. It is designed to attempt to engage in conversation with people via IM. It supports such features as remote administration and full conversation logging. There is also a mechanism for eavesdropping on conversations other people are having with the bot. All administration is handled over IM, allowing remote administration. Using a simple scripting language, the bot's conversational responses can be modified to taste.
LarryMessenger is a simple to install and easy to use cross-platform instant messenger client. It has a nice graphical user interface, and allows people to communicate over a LAN with static IP addresses without the need for a central server. Furthermore, it provides functions to query the ICQ and AIM networks.