CheetaChat

CheetaChat is a standalone chat client for Windows. It allows you to play WAV files, customize emoticons and macros, save transcripts of your chat sessions in RTF or TXT format, and use backward writing and alternating caps, all within an interface similar to a word processor. CheetaChat also has its own integrated Web browser and features full "smiley" support. Other features include Microsoft Agent technology (to make Yahoo Chat and iChat speak to you), customizable personalities, file-transfer capabilities, a text fader with a graphical color selector, a macro editor with built-in coloring tools and preview capabilities, integrated friends management, support for secured rooms, and a customizable interface.