100 Brilliant Companies to Watch Here are the companies that represent the problem-solving, void-filling, consumer-driven landscape of entrepreneurship today.

If there's one clear trend that has emerged as we compiled the 2015 Brilliant 100, it's that everyone—especially young adults—wants to keep tabs on everything.

Millennials are driving technology and commerce in an altruistic direction that melds personal responsibility (for one's health and well-being, as well as that of employees and customers) with social responsibility (for the global community, planet and big-picture economy).

That starts with monitoring our own bodies and habits. The global market for wearable devices is expected to grow at a compound annual rate of 35 percent, reaching 148 million units by 2019, according to a report from BI Intelligence. Nearly half of wearable tech owners, 48 percent, are between 18 and 34 years old, according to Nielsen.