Open Systems Accounting Software (original) (raw)

Open Systems Accounting Software (OSAS) is a business accounting software package for small- to medium-sized businesses using the Microsoft Windows, Linux, and Mac OS X operating systems. It has been developed and sold since 1976 by Open Systems, Inc. of Shakopee, MN. OSAS is currently programmed in the Java-based language developed by . The Java implementation allows installation of OSAS on a variety of platforms.