Business matching and collaboration support systems are useful, in particular for small-and-medium companies. Most of them developed so far are based on the server-client architecture and provide their services on Web servers. They require special administrative facilities, ask users to upload their data for matching between business needs and seeds, and leave to themselves peer-to-peer communication or negotiation between matched companies. Considering these problems, we have been developing an agent-community-network-based business matching and collaboration support system. Our system requires neither any special administrative facilities nor uploading user data to a special server. It furthermore supports secure peer-to-peer communication between users. It is implemented with multi-agent Kodama framework.