Class Central is a search engine and review site for online courses. It aggregates courses from many providers to make it easy to find the best courses on almost any subject, wherever they exist. They have served millions of learners all around the world, and are the one of the most credible sources on e-learning.

Every year, Class Central publishes the ranking of the Best Online Courses of All Time, based on thousands of reviews written by Class Central learners.

Best Online Courses of 2018

HOPE: Human Odyssey to Political Existentialism
Princeton University via edX
What sets us apart, and brings us together, as humans? How can we live up to our humanity? Join us as we explore not only “life, liberty, and the pursuit of happiness” but “death, freedom, and the pursuit of meaning.”

Learning How To Learn for Youth
Arizona State University via Coursera
Based on the most popular open online course in the world, this course gives you easy access to the learning techniques used by experts in art, music, literature, math, science, sports, and many other disciplines. No matter what your current skill level, using these approaches can help you master new topics, change your thinking, and improve your life.
★★★★★ (45 ratings)

Algorithmic Information Dynamics: From Networks to Cells
Santa Fe Institute via Complexity Explorer
This course provides a conceptual introduction to the new and exciting field of Algorithmic Information Dynamics, focusing on mathematical and computational aspects in the study of causality.
★★★★★ (59 ratings)

Elements of AI
University of Helsinki via Independent

The Elements of AI is a series of free online courses created by Reaktor and the University of Helsinki. We want to encourage as broad a group of people as possible to learn what AI is, what can (and can’t) be done with AI, and how to start creating AI methods. The courses combine theory with practical exercises and can be completed at your own pace.
★★★★★ (50 ratings)

Cartography
Esri via Independent
Once, only cartographers made maps. Today anyone can. Still, cartographers can teach people to make better maps, just as chefs can show people how to cook better meals. With coaching from experienced cartographers and practical, hands-on exercises using ArcGIS Pro, you’ll become a smarter mapmaker, ready to go beyond the defaults and make better maps.
★★★★★ (49 ratings)

Applied Scrum for Project Management
University System of Maryland via edX
Learn the project management processes, roles, mechanics, and philosophies behind Scrum, the simplest and most pure approach to managing work at the team level.
★★★★★ (40 ratings)

Marketing Digital: Content & Community Manager
Galileo University via edX
Aprende a crear estrategias de marketing de contenidos y domina Facebook, Instagram, YouTube, Twitter y más. Mide KPIs y obtén resultados.
★★★★☆ (21 ratings)

Advanced Precalculus: Geometry, Trigonometry and Exponentials
University of Padova via FutureLearn
Explore advanced precalculus topics, and gain the mathematical knowledge and skills required to take a first course in precalculus.
★★★★★ (19 ratings)

Matrix Algebra for Engineers
The Hong Kong University of Science and Technology via Coursera
This course is all about matrices, and concisely covers the linear algebra that an engineer should know.
★★★★★ (17 ratings)

Young People and Their Mental Health
University of Cambridge via FutureLearn
What are the most common mental health problems, what can you do about them, and how do you improve your mental health?
★★★★☆ (16 ratings)