America's Most Promising Social Entrepreneurs 2011

When Jonathan Jackson started Dimagi, a software firm that makes open-source tools to improve health care in underserved communities and developing countries, he wanted to help people in need and create a sustainable, profitable company. Last year, the 20-employee Charlestown (Mass.) business got certified by B Lab, a nonprofit that promotes socially responsible business to show fellow entrepreneurs that businesses can tackle social ills. "Growing up, I thought the way you did that was go get rich and then donate your own money," says Jackson, 30. "I didn't realize there was this industry behind it."

To continue reading this article you must be a Bloomberg Professional Service Subscriber.