The latest Multigraph release now includes a module for the Drupal content management system, which makes it really easy to create and manage Multigraph graphs on a Drupal site. Check it out at the Drupal Module page.
Note: this web site is for the old, Flash-based, version of Multigraph. Starting in December 2012,
there is a new JavaScript/HTML5 version of Multigraph, which is distributed
from the site multigraph.github.io. Future projects
should use the new JavaScript/HTML5 version of Multigraph rather than the Flash version
described here.