Bellwether Purchasing Software, founded in 1985, helps small and mid-sized organizations reduce costs, gain organizational control over spending and improve regulatory compliance through implementation of its Procurement Management Software ( Material Management Software ), Bellwether Purchasing Manager (BPM). BPM includes e-Procurement Software ( Material Management Software ) components for invoice management, procurement, inventory and material management and vender performance optimization. Bellwether has its Corporate Headquarters located in Louisville, KY, and a Regional Office in Chicago, IL.