A Java evolutionary computation framework. It includes a visual designer, source code editor and debugger and aims to provide a toolkit for easy implementation of all kinds of evolutionary algorithms. http://www.evolvica.org
An introductory explanation of genetic algorithms available in HTML and PDF formats. The Genetic Algorithm Viewer Java applet shows the functioning of a genetic algorithm. http://www.rennard.org/alife/english/gavintrgb.html
GEATbx is a comprehensive implementation of evolutionary algorithms in Matlab. A broad range of operators is fully integrated into one environment. http://www.geatbx.com/