3D Game of Life - An animated 3D generalization of John Conway's Game of Life written in Java, with examples.
David Ingalls Bell's Homepage - Articles on Conway's Game of Life and related Cellular Automata, free Unix software, archives of Life and other CA patterns.
Eric's Treasure Trove of Life - Eric W. Weisstein's home page about Conway's Game of Life and related CA. Tutorial, information, patterns, links, references.
Game of Life in Java - Java applet by David Laurent. Game of Life in colours or Black and White, many shapes
Game of Life: Patterns, Programs, and Links - Information on Conway's Game of Life, including a library of patterns with descriptions, articles on special topics, software, and links. By Paul Callahan.
John Conway's Game of LIfe - A simple Java implementation of Conway's classic game of life. Use stock starting points or draw your own.
Life32 - Home page for Life32, The best Conway's Game of Life simulator for 32-bit Windows. By Johan Bontes.
LifeGen for EPOC - A freeware program to simulate John Conway's Game of Life on EPOC handheld devices. By Edward J. Sheldrake.
LifeLab for Macs - Andrew Trevorrow's Macintosh application for exploring John Conway's Game of Life and other 2D cellular automata.
Mark D. Niemiec's Home Page - John Horton Conway's Game of Life, including complete lists and glider syntheses of smaller still-lifes, oscillators, and spaceships.
Mushroom Life - A flash implementation of Conway's game of life by Joseph Huang.
OpenLife - OpenLife is kind of a Game of Life for the new generation, using latest but tested technologies. However unlike its distant predecessor, OpenLife seeks to be useful.
Probalistic Life - Java applet of Life, with the ability to change the rules producing some very interesting variants on the classic Conway Life.