Thanks for your interest in Copycat! Copycat is written in Common Lisp. The system is unfortunately rather outdated: it will not run as is without some updates for modern versions of Common Lisp, and some platform-specific modifications to the graphics files. I am hoping that it will be rewritten in a more platform independent way sometime soon. I am still making the source files available.

To get the source files, go to :

and at your home machine, untar the file to get the source files.

If your system can't deal with tar files, then go to

and individually get each source file.

To get Jim Marshall's Metacat project, go to:

Scott Bolland of the University of Queensland wrote a Java version of Copycat and a tutorial; the web site is