The latest stable version is 0.5.19 (fract-0.5.19.tar.gz). It depends on poly-pen, cl-ppcre, and clsql. This is the complete Web and REPL interface and is it not known to be easy to setup. If the only thing you want is to produce cute images and animations, most of the engine was factored out as Mini-Fract 0.6 (mini-fract-0.6.tar.gz). This is a stand alone Common Lisp program; it should be easy to install.
graphics library application