edX

edX, founded in 2012 by Harvard and MIT, excels in delivering rigorous university-level education, especially in STEM and computer science, with its initial MIT circuits course attracting 155,000 students from 162 countries. Offering over 6,700 free-to-audit courses, edX surpasses Coursera in accessible high-quality content, while its MicroMasters programs provide depth comparable to on-campus study.