The software component of an AIS is the computer programs used to store, retrieve, process and analyze the company's financial data. Before there were computers, AISs were manual, paper-based systems, but today, most companies are using computer software as the basis of the AIS. Small businesses might use Intuit's Quickbooks, Sage Peachtree Accounting, or Microsoft's Small Business Accounting but there are many others. Small to mid-sized businesses might use SAP's Business One. Mid-sized and large businesses might use Microsoft's Dynamics GP, Sage Group's MAS 90 or MAS 200, Oracle's Peoplesoft or Epicor Financial Management.