SleepyEgg

It has become a bit of a cliché: really innovative technology comes from garage-level startups. Once a company gets too large, it focuses its energy on keeping its existing customers happy, and loses its edge. But, for the most part, the technology we rely on for getting things done—providing the hardware and networking infrastructure, for example—comes from mature, profitable companies. So, we thought it might be interesting to take a step back and look at what tech companies are among the most successful at marketing products and services that are widely put to use.

Of course, any measure of "success" is inviting argument. Should it be profits, units sold, recent growth? We settled on two measures. The first is the market capitalization, which provides some sense of how the financial community views both a company's current fiscal strength and its potential for future growth. To provide some sense of how much of that is growth potential, we chose the price-to-earnings ratio as our other measure—the higher the number, the more the company's perceived growth potential factors into its market cap.