Repository URL:
http://www.math.utk.edu/~kens/CirclePack
A "circle packing" is a configuration of circles having a specified pattern of tangencies. CirclePack is a Java package for the creation, manipulation, analysis, and display of circle packings. You can run it by visiting CirclePack.jnlp Alternately, you may download CirclePack.jar from the repository site. CirclePack is typically run using prepared "script" files (.xmd files).