In 1984, Vertical Market Software (VMS) opened its doors to provide an integrated accounting and job costing system to general contractors throughout the country. VMS provides service, construction, and accounting software to software to contractors nationwide. They also offer a complete enterprise solution for efficient business management and optimization.

William Tao & Associates, Inc. (WTA) is a multi-discipline engineering firm providing innovative services in engineering and energy-effective building systems. WTA provides a wide range of engineering services including mechanical, electrical, plumbing, fire protection, building automation, structural, civil, master planning, and commissioning