Look at Adium (which is IM, but I don't think IRC) and Colloquy (IRC and SILC) on OSX. They output chat to XML which is then 'themed' with XSLT into HTML to dis

Look at Adium (which is IM, but I don't think IRC) and Colloquy (IRC and SILC) on OSX. They output chat to XML which is then 'themed' with XSLT into HTML to display in a Webkit frame. It sounds really convoluted, but it's presented in HTML form. and you can use images etc.