DP - Links

Bottom Layer: Collected essays and links by Ross Rhodes
especially see "Commentary on The Finite Nature Hypothesis of Edward Fredkin"

Computer Universe: Juergen Schmidhuber's site about Konrad Zuse and his own contribution to the "Universe as a CA" idea

Cellular Automata (CA)

Frequently Asked Questions About Cellular Automata (CA-FAQ): The new CA FAQ, edited by Tim Tyler
Frequently Asked Questions About Cellular Automata (CA-FAQ), ver. 1996: The old CA FAQ, edited by Howard Gutowitz (1996)
Cellular Automata, by Tim Tyler: An extensive site about CAs maintained by Tim Tyler
Information Mechanics Group (IMG)
Computational Mechanics Group (CompMech)
Evolving Cellular Automata (The EVCA Project)
The Cellular Automata Simulation System
Lattice Gas Flaw Simulations
Cellular Automata Research GrOup (CARGO): Look here for Penrose Tilings CAs
Paul Saretok CA page: Some lovely CA simulations in Java
Primordial Soup Kitchen
CeVis - Cellular Automata Group
Discrete, Amorphous Physical Models: Paper by Erik Rauch; includes some excellent MPEG animations
3D Game of Life: 3D CA Java applet, by Evgeny Demidov
Life3D: 3D CA Java applet, by Thomas Feldbauer and Markus Doetsch
Visions of Chaos: Complex systems software, by Jason Rampe. Includes CAs, L-systems, fractals, etc.
3D CA: Collection of links to 3D CA software

Complex Systems

Gregory J. Chaitin Home Page
Measures of Complexity
Bravais Lattices: Go to the table of contents, and start with 'Atomic Arrangements'.; Also: Diamond Lattice Movie Animation of the diamond lattice rotating.
MIT AI Lab Reversible Computing Home Page
CSC Mathematical Topics: Visualizations

Digital Physics/Mechanics