Blockbuster products have become the norm for Apple, which debuted on this list in sixth place in 2007. The tech leader has become synonymous with innovation, style, functionality -- and growth. In the second quarter of 2011, it sold 18.65 million iPhones, a 113% increase over the same period the year before. With the resignation of CEO Steve Jobs this summer, all eyes will be on Cupertino to see if the company can keep the hits coming.
Fortune's annual roster of high performers reveals the promising saplings that are rising in a difficult economy and some stalwarts that deliver year after year.
