Bowman saw the vast potential computers offered to small and medium-sized companies at a time when computing was available only to corporations and institutions.
All-night programming sessions with John Cowan, now a director of Naiad Marine, resulted in the 1983 launch of CBA, a DOS-based accounting system that Greentree says was one of New Zealand's earliest software exports.
Greentree, CBA's successor, was launched in 1999.
"People told Don he was crazy, including me," Dickinson said. "But once again, he was right. Greentree today is expanding from Australia and New Zealand into the European and US markets, and competing successfully with the likes of Microsoft, SAP and Sage."
Bowman died after a battle with cancer and is survived by his wife, Gwen, five children and 15 grandchildren.