ObjectGraph will output Graphviz dot files of your objects in memory. It will ferret out your instance variables and enumerate over your enumerables to give you a graph of your object and its relationships. For sample output and more sample code see: * http://flickr.com/photos/aaronp/tags/graphviz/ * http://tenderlovemaking.com/2007/06/17/graphing-ruby-objects/ * http://tenderlovemaking.com/2007/01/13/graphing-objects-in-memory-with-ruby/