John Sall

Met James Goodnight at North Carolina State, duo started SAS 1976, now largest privately held software company. Firm develops business intelligence software, databases. Major clients include banks, pharmaceutical companies. Sales: $2.2 billion last year, up 15% over 2006. Provides workers with free snacks and drinks, onsite health care, subsidized child care. Statistics wizard Sall runs dynamic data visualization software division. Sall and his wife Ginger, who have four children together, have given over $130 million to their Sall Family Foundation, which invests in the environment, public health and science.