The International Simultaneous Policy Organization runs simpol.org as the main web portal for those who are interested in promoting international simultaneous policy.

Unfortunately they pay no attention to wikis or other participatory democracy methods, and have failed to provide naming conventions for international simultaneous policy. A simultaneous policy wiki has been proposed as an adjunct to their main web service atsimpol.org

This and the Comparative Democratization Project at Stanford University are the top two services listed for society/politics/democracy references at dmoz.org.