BlueChat is a fast, Free, nice looking, web based chat script. Made to be quick and not hog server resources, but still has many features. Multiple channels, actions, colored names and messages, smile images.
Supports an unlimited number of images, unlimited number of image categories, image access tracking, image descriptions, multiple user administration, extensible file types for viewing of unlimited types of media, templates, and complete control over the style of your gallery. All through a simple web based administration site.