CAL Business Solutions was formed as Computer Associates Limited in 1982 by George Mackiewicz, in the Harwinton, Connecticut area. In 2024, CAL announced appointment of the companies new principal owners, Stacey Poll and John DiLeo. Although the company has grown to become one of the largest ERP resellers in New England, we still maintain our small town values and put an emphasis on personal relationships.  CAL is committed to supporting local Connecticut companies.

1982 – The small CAL team provides custom software development in the early days of PC and MINNI computers out of a home office in Cheshire, Connecticut.

1986 – The CAL team begins to focus on providing HR and payroll systems to petroleum distribution and retail companies in partnership with STS.

1988 – CAL moves into an office in New Hartford, CT and begins to sell the DOS version of Great Plains accounting software.

1997 – CAL becomes a Great Plains software partner and begins to focus exclusively on this product.

1999 – CAL builds a 6,600 square foot office building on Birge Park Road in Harwinton, CT and acquires the Great Plains practice of DHL&S accounting firm.

2001 – Microsoft purchases Great Plains and it became the current Microsoft Dynamics GP. CAL is now a Microsoft Partner.

2006 – CAL acquires Milford, CT based IntelliBridge and doubles the size of the team focused on Dynamics GP. Computer Associates Limited officially becomes CAL Business Solutions Inc.

2012 – CAL forms a partnership with Stamford, CT based Microsoft Dynamics GP partner, Artiso Data Systems to expand the CAL team.

2015 – The CAL team has grown to become one of the largest Microsoft Dynamics GP resellers in New England.

2016 – CAL adds the Acumatica product line to expand its ERP offering and accelerate growth. Our story.

2017– CAL achieves GOLD partner certification from Acumatica, the highest level of training certification.

2023 – CAL adds Microsoft Dynamics 365 Business Central product line to expand its ERP offering. Read More

2024 – CAL Announces Appointment of New Principal Owners. Read Full Announcement