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 The system is unfortunately rather outdated: it will not run as is without some updates for modern versions of Common Lisp, and some platform-specific modifications to the graphics files.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 :

http://www.cs.pdx.edu/~mm/ccat.tar.gz

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

http://www.cs.pdx.edu/~mm/ccat-src/

and individually get each source file.

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