Major MOOC Providers:
Coursera - 751 MOOCs in a searchable database. Primarily courses delivered by universities.
Udacity - A for-profit that offers MOOCs that focus on vocational courses for professionals.
Udemy - Oriented toward IT, tech, and design.
Swayam - An initiative from the Indian government to increase access, equity, and quality in education in the skills and knowledge of the digital economy.
Future Learn - University courses, primarily from the UK.
MasterClass - primarily for the creative arts, these are are expanding in topics and scope. They have a personal-learning focus.