Originally developed as MAS 90 (Master Accounting Series for the 90s) by State of the Art in Irvine, CA in 1986, Sage 100 c has evolved considerably since it’s early days to become one of the easiest and most cost-effective ERP products available for growing businesses. The product was moved from Microsoft DOS to Microsoft Windows in the 1990s and redesigned for true client-server architecture. Recent versions have introduced the modern user interface and extended solutions for credit card payments, improved shipping, and inventory management.