Top 10 America's Most Promising Young Companies

No. 1: Vextec Vextec.com Founded: 2000,@ Brentwood, Tenn. with 23Employees Industry: Computational analysis,2008 Revenue: $3 million Company Vitals: Invented patented modeling software that predicts, with great accuracy, how and when components will fail--even before they're built. Customers include Cummins, BorgWarner and Lockheed Martin. No. 2: Kerosene and a Match