Harvard Free Online Courses — CS50 & 125+ Courses with Certificate

Harvard University offers 125+ free online courses with certificates through Harvard Online and edX. Flagship course CS50 (Introduction to Computer Science) is one of Harvard's most popular courses, entirely free with a free certificate of completion. Other courses cover leadership, data science, business, entrepreneurship, public health, rhetoric, justice, and more. Free audit learning with option to earn verified certificates. Open to everyone worldwide, no prerequisites for most courses. Self-paced learning from Harvard faculty.