Here's a link to a tool called QuizStar.  It enables instructors to prepare online quizzes in multiple choice, true/false, and short answer formats.  It controls the time that students have available to them to complete the quizzes, and marks them automatically.

It seems to provide a useful adjunct to the downloading of content online that authors like Jose Bowen in Teaching Naked suggests we embrace so as to free up face time for critical thinking exercises.

As we probably all know (we were students once ourselves, after all), many of our learners will either fail to do assigned reading, or watch content videos, as we would want them to do, before class.  Bowen suggests quizzes for grades, administered shortly before class, to encourage learners to do the required reading/viewing.  QuizStar seems to be one of several software products that fills the bill.

http://quizstar.4teachers.org/