MOOCs (Massive Open Online Courses) provide free online courses to unlimited participants worldwide. While MOOCs aim to make education accessible to all, they have faced criticism over high dropout rates and concerns about pedagogy. Major MOOC platforms like Coursera, Udacity, and edX offer free certificates but have varying strengths and weaknesses in their course catalogs, formats, and communities. The future of MOOCs and their role in transforming higher education remains unclear.