Potbot is a simple IRC bot, designed to allow someone with only little Perl knowledge to add modules and produce a custom bot to serve their needs to the greatest extent possible. Although the bot is written to allow easy additions of modules, it's already fully working in its current state and can be used as such without any modification.
RealChat is an affordable chat software solution for your Web site. Its features include colored text, pictures, sounds, emotions, multiple rooms, private messages, user-created rooms, hidden rooms, administrative manager, console and file logging, and more. The package includes client and server software. An online demo available, and an evaluation version is available for free download.