Here are the thirty most popular free online university courses and Massive Open Online Courses (MOOCS) starting in September 2021, based on Class Central learners’ activity.

You can find the entire catalog of 40,000 online courses many of which are offered by 1000 universities around the world on Class Central’s subject page.

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English and Academic Preparation – Grad Track
Rice University via Coursera
The English and Academic Preparation – Grad Track course is for students with a (minimum) advanced level of English. It is designed to help international students strengthen their English while developing academic skills necessary for success in graduate studies at an American university. Ideally, prospective students have completed or are near completion of a bachelor’s degree in their country and would like to come to the United States to study for a master’s or doctorate degree.

Expert Communication for Career Success
Tomsk State University via Coursera
By the end of the course, you will be able to communicate effectively with colleagues and managers, and be prepared to communicate as a manager with your own team of employees.

Computer Hardware and Software
University of California, Irvine via Coursera
This course provides foundational understanding of how computers process information through hardware and software. You will investigate the world of Information Technology (IT) and survey hardware components, mobile devices, operating systems, programs and apps, network fundamentals, the Internet, and touch on security and ethics.

Intelligent Systems: An Introduction to Deep Learning and Autonomous Systems
University of York via FutureLearn
Discover the benefits and risks of deep learning and its uses in systems such as assistive technology and facial recognition.

English Language Teaching: An Introduction
Tomsk State University via Coursera
The course will introduce students to basic concepts and issues in English Language Teaching. It will explore the history of ELT, mainstream approaches and new trends. Students will be familiarized with such methodologies as Grammar Translation, Audiolingualism, Presentation, Practice and Production, Communication Language Teaching, Task-based Learning, and Content and Language Integrated Learning as well as alternative methods and approaches such as Storyline and Dogme ELT.

Human Health Risks, Health Equity, and Environmental Justice
University of Michigan via Coursera
The fourth and final course of the Impacts of the Environment on Global Public Health specialization will cover two topics. The first is environmental justice – that is, avoiding an inequitable distribution of environmental health threats in our population, and ensuring a healthy and safe environment and health equity for all.

Introduction to Financial Engineering and Risk Management
Columbia University via Coursera
Introduction to Financial Engineering and Risk Management course belongs to the Financial Engineering and Risk Management Specialization and it provides a fundamental introduction to fixed income securities, derivatives and the respective pricing models.

Efficient HVAC Systems
Delft University of Technology via edX
Learn how to decide on efficient combinations of energy conversion systems and how to distribute and control air and energy flows in buildings whilst minimizing carbon emissions and optimizing thermal comfort in close consideration with the architect.

Creating Audio Description: Equality, Diversity, and Inclusion
Royal Holloway, University of London via FutureLearn
Explore how to design and create audio descriptions and audio introductions that fully represent a film, play, or TV programme.

Intellectual Property for Entrepreneurs
University of Maryland, College Park via Coursera
For aspiring and active entrepreneurs, this course focuses on the opportunities and challenges of intellectual property. Intellectual property is a commonly discussed, often misunderstand, element of entrepreneurship and law. Knowing how to create and manage patents, copyrights, trademarks, and trade secrets is a valuable skill for entrepreneurs and business leaders.

Renewable Energy Technology Fundamentals
University of Colorado Boulder via Coursera
This course will provide you with a solid foundation for understanding and deploying important renewable energy technologies such as wind and solar. In addition, you will come away with a good understanding of important energy storage technologies such as pumped hydro, batteries, and hydrogen.

Market Risk Management: Frameworks & Strategies
New York Institute of Finance via Coursera
This course provides the foundation for understanding the frameworks used to develop market risk management strategies. You will identify the market risks associated with each type of financial instrument.

Overcoming Bias
University of California, Irvine via Coursera
This course is for anyone that wants to learn more about bias and how it can affect business, relationships, and communities. The course begins with an exploration of the word bias and its many definitions. The course then covers workplace bias and strategies for overcoming personal bias. The course ends with an activity in which the learner creates an action plan for a bias free workplace.

Introduction to Machine Learning in Sports Analytics
University of Michigan via Coursera
In this course students will explore supervised machine learning techniques using the python scikit learn (sklearn) toolkit and real-world athletic data to understand both machine learning algorithms and how to predict athletic outcomes.

Diversity and Inclusion in Education
University of Glasgow via Coursera
Student diversity is becoming the rule rather than the exception in education systems across the world. Students bring to classroom different characteristics such as ability and disability, socio-economic background, race, ethnicity, and cultural background, beliefs and religion, and gender characteristics. The United Nations’ Sustainable Development Goal 4 aims to ensure inclusive and equitable quality education and promote lifelong learning opportunities for all (United Nations, 2015).

A Nutritional Approach to Agriculture and Food Security
University of Leeds via FutureLearn
Develop skills to apply and evaluate innovative solutions that place nutrition at the heart of a sustainable food system.

Principles of Public Relations
University of Colorado Boulder via Coursera
In this course, learners are exposed to an overview of public relations principles and theories relevant to practice. You will explore the field, including the origin and trends affecting the future of the industry as well as how to land a job in public relations. This course provides a broad overview of working in public relations and how different tenets of persuasion are used in practice. The course also addresses ethical implications of public relations.

Derivatives Markets: Advanced Modeling and Strategies
Massachusetts Institute of Technology via edX
Financial derivatives are ubiquitous in global capital markets. Students will obtain a sophisticated understanding of valuation methods; tools for quantifying, hedging, and speculating on risk; and a basic familiarity with major markets and instruments.

Computational Methods in Pricing and Model Calibration
Columbia University via Coursera
This course focuses on computational methods in option and interest rate, product’s pricing and model calibration. The first module will introduce different types of options in the market, followed by an in-depth discussion into numerical techniques helpful in pricing them, e.g. Fourier Transform (FT) and Fast Fourier Transform (FFT) methods.

Deploying Machine Learning Models in Production
deeplearning.ai via Coursera
In the fourth course of Machine Learning Engineering for Production Specialization, you will deliver deployment pipelines by productionizing, scaling, and monitoring model serving that require different infrastructure; establish procedures to mitigate model decay and performance drops; and establish best practices and apply progressive delivery techniques to maintain and monitor a continuously operating production system.

Health After Cancer: Cancer Survivorship for Primary Care
Stanford University via Coursera
This course presents basic principles of cancer survivorship to primary-care physicians. Developed by a team of experts in caring for cancer survivors, and narrated by a primary-care physician, this course provides practical tips and tools that can be easily integrated into medical practice.

Nanomaterials for Civil and Environmental Applications
Purdue University via edX
Learn about the field of nanotechnology with a special emphasis on nanomaterials synthesis, characterizations and their applications in civil and environmental engineering.

Test of Russian as a Foreign Language (TORFL/ТРКИ): B1
Saint Petersburg State University via Coursera
This course is aimed at those who have completed their studies of the Russian language at A2-B1 level and feel ready to pass the First Certification Level of the Test of Russian as a Foreign Language (TORFL, or ТРКИ).

Physics 102 – Magnetic Fields and Faraday’s Law
Rice University via Coursera
This course serves as an introduction to the physics of electricity and magnetism. Upon completion, learners will have an understanding of how the forces between electric charges are described by fields, and how these fields are related to electrical circuits.

Rehabilitation after COVID-19
Saint Petersburg State University via Coursera
This course includes recommendations from the multidisciplinary expert team for evidence-based interventions for adults. It is designed for healthcare professionals who may have relatively limited understanding of rehabilitation – the process, the interventions, and its positive impact. It is also relevant to patients and their families. By the end of the course you will receive crucial knowledge necessary to provide safe, effective quality rehabilitation after COVID-19.

Dublin: A Social History, 1850-1930
Dublin City University via FutureLearn
Journey into Dublin’s past, and learn about housing, health, and life in the city from the viewpoint of ordinary Dubliners.

Design of Sanitary Sewer Systems
Purdue University via edX
Analyze open channel flows, quantify wastewater flows, and design sanitary sewer systems.

History of Mental Illness
Wesleyan University via Coursera
This course explores the history of this productive science its discoveries, classifications, and treatments of psychiatric distress. The excursion begins with a general introduction and proceeds to explore 4 kinds of mental illness: neurasthenia, depression, attention deficits (ADD/ADHD), and narcissism. Each kind is examined in terms of its scientific research and classification; treatments developed to cure or alleviate its symptoms; lived-experiences of those so diagnosed with the disorder; and critical reflection on the diagnosis.

Creating Behavioral Change
Wesleyan University via Coursera
In this course you will learn about understanding and changing mental and physical health behavior. We will examine both the historical context and the current science. Major topics will include fundamental behavioral principles and basic elements of empirically supported individual treatments (e.g., motivational interviewing, cognitive behavioral therapies).

One-way Quantum Computation
Saint Petersburg State University via Coursera
In this course, you will explore in detail the one-way quantum computing model. This model is one of the most promising in terms of practical implementation. In addition, you will understand what continuous-variable quantum computation is and how this type of computation differs from the usual computations with qubits.