Summary Files Reviews Support Wiki Add a Review 0 Downloads (This Week) Last Update: 2013-04-05 Description Billing system based on module structure. Katrin Web Site Categories Update Notifications Subscribe to Updates Sent to . You seem to have CSS turned off. Please don't fill out this field. You seem to have CSS turned off. Please don't fill out this field. Write a Review User Reviews Be the first to post a review of Katrin! Additional Project Details Registered 2007-06-22 Report inappropriate content