Lotus Artificial Life's Java cellular automata substrate capable of supporting evolving, self-reproducing organisms which are capable of universal computation.
Source of information, technical report, and source code for the PolyWorld computational ecology, maintained by Larry Yaeger, PolyWorld's author. (This site contains more up to date links and information than the PolyWorld page at the Santa Fe Institu...
A model of human brain function designed by a neuroscientist at UCSD. The VIM is used to drive 3D characters who live in virtual worlds and can express emotion and creativity.