You may be surprised to know that L

You may be surprised to know that LearnDash can be used quite easily for your MOOC. One benefit compared to the others is the amount of customization you can give in regards to the look and feel of your site given the large variety of WordPress templates available. Another major advantage are dynamic quizzes with any question type you can imagine. In fairness, a natural downside is that there is some learning curve if you have never used WordPress before (but luckily WordPress is very well documented)!