Article system that integrates with vB?
 

The sites below were all designed by the same company and use some article script. I'd assume it is an off-the-shelf package since they seem to be using other third party stuff in there development, like the project7 menus and what not.

http://www.bulldawgjunction.com/
http://www.bucknuts.com/
http://www.totaluga.com/
http://www.auburnundercover.com/

Does anyone know what article script they may be using? If not, can you suggest an article management script that does the same thing? vBulletin forum integration is a must, too, as these sites all do it.