Coursera is a major online learning platform established in 2012 by Stanford professors Andrew Ng and Daphne Koller, with the mission of offering universal access to top‑quality courses and credentials.

It partners with over 300‑350 leading universities and companies, such as Stanford, IBM, Meta, and Google, to deliver courses, Specializations, Professional Certificates, and fully online bachelor’s and master’s degree programs.

Learners can audit many courses for free (participating in lectures, reading materials), though graded assignments and certificates usually require payment.