"Andrew Ng and Daphne Koller, the Stanford University computer scientists who founded Coursera, said the company is starting to bring in revenue from a trial program that offers special certificates to students who pay a modest fee, about $30 to $100, and take certain steps to verify their identity. The program, called “signature track,” has yielded $220,000 in 11 weeks, Ng said, and will expand.

Some of that money will be shared with universities.

The company is also exploring ways to raise revenue through proctored exams, for students who might want to obtain course credit, and through helping match employers with top students.

Ng announced Friday that Coursera will soon add an “app platform” to enable universities to add instructional tools, often interactive, to enhance their MOOCs."