Open-source projects and operating systems are in offerings from Facebook, Twitter, Uber Technologies and operating systems such as Linux at the foundation of servers, financial trading platforms and Android phones. But businesses based on open-source code find it hard to make a profit, and sell tech support and consulting services for revenue. Even those that spin off companies from open-source projects don’t make big profits. The solution, some are finding, is to create proprietary code to support the free tools. Continue reading Open-Source Companies Turn to Proprietary Code for Profits