Alison

Alison is a pioneer in free online learning, offering a wide range of certificate and diploma courses primarily in workplace skills, IT, health, and languages. Learners can access all content for free, with optional paid certificates and ad-free experiences. Its key strength is accessibility and a large catalog of practical, vocational training. It serves learners with limited budgets, especially in developing regions, and those seeking basic certification.

It ranks for its commitment to free education and massive user base, though course quality and production values can be inconsistent compared to paid platforms.