Proacademy is an all-in-one solution for creating online education marketplaces like Udemy, Skillshare, Coursera, etc.
Demo: https://codecanyon.net/item/proacademy-lms-online-courses-marketplace/25384806
source http://www.codelist.cc/scripts/242345-proacademy-v24-lms-live-classes-marketplace.html