OSAS from Aptean is a market-leading provider of accounting, business management, and ERP software solutions. Powered by OSAS ... , our products—Traverse, ProcessPro, Master, Impress, Flex-Pack, Service and SouthWare—are designed to solve the unique business and industry needs of clients, helping them to remain competitive and excel. OSAS delivers and supports adaptable suites of technology applications to distribution, wholesale trade, manufacturing, services, job shop and not-for-profit companies. read more