Bellwether Purchasing Software is a purchasing and inventory management solution that can be used on-premise or in the cloud. It includes features such as requisitions, approval routing, purchase order management, receiving, invoice matching, inventory management, and self-service order status. The requisition module allows users to select items, customize fields, and view budget spend. The approval module provides conditional approval routing. The purchasing module allows for single or multiple PO creation, and the receiving module is also included.