I find Comix to be usable, but I do prefer CDisplay by a wide margin.  I found this just now:  <a href="http://sourceforge.net/projects/cdisplayex" target="_blank">http://sourceforge.net/projects/cdisplayex</a>  It says it is based on CDisplay, and the sourcecode is available there on sourceforge.  I'll take a look at it when I get home.