The OpenMx/OpenSEM site uses Drupal [1] and the following modules:
If you want to contribute to the project, but would rather do web development, you can assist Repoview in implementing diffs.
Links[1] http://drupal.org/ [2] http://drupal.org/project/project [3] http://drupal.org/project/print [4] http://drupal.org/project/subscriptions [5] http://drupal.org/project/versioncontrol [6] http://drupal.org/project/versioncontrol_svn [7] http://drupal.org/project/repoview