Class Central

Rankings
Career Certificates

Subjects

View all

Technology
Business
Creative
STEM
Health & Wellness
People & Society
Personal Growth & Lifestyle

View all Subjects

Universities
The Report

Courses from 1000+ universities

Rankings

Best Courses

Best of All Time
Best of the Year

Most Popular Courses

Most Popular of All Time
Most Popular of the Year

Career Certificates

Generative AI
UX Design
Data Science
Finance
DevOps
Project Management
View all Career Certificates

Technology

Computer Science
Artificial Intelligence
Data Science
Web Development
Programming
Databases
IT & Networking
DevOps
UX/UI Design
Blockchain & Cryptocurrency
Extended Reality (XR)
Generative AI
Cloud Computing
Cybersecurity
Game Development
Product Management
View all Technology

Business

Management & Leadership
Finance
Entrepreneurship
Marketing
Strategic Management
Project Management
Sales
Business Software
Real Estate
Operations Management
Professional Development
Accounting
Supply Chain Management
Human Resources
View all Business

Creative

Music
Digital Media
Visual Arts
Design
Crafts
Performing Arts
AI Art
View all Creative

STEM

Mathematics
Engineering
Science
Statistics & Probability
Chemistry
Physics
Environmental Science
Astronomy
Biology
Agriculture
View all STEM

Health & Wellness

Disease & Disorders
Public Health
Health Care
Nursing
Mental Health
Continuing Medical Education (CME)
Medicine
Wellness
Nutrition
View all Health & Wellness

People & Society

Humanities
Education & Teaching
Social Sciences
History
Literature
Sociology
Economics
Psychology
Anthropology
Political Science
Law
Language Learning
Writing
Philosophy
Religion
View all People & Society

Personal Growth & Lifestyle

Personal Development
Sports & Recreation
Personal Finance
Parenting & Family
Food & Drink
Self-Defense
Gardening
Productivity
Games
Study Skills
Travel
Pets & Pet Care
Beauty & Makeup
Home & Living
Critical Thinking
View all Personal Growth & Lifestyle

Chasing 100M Daily Users, Duolingo Reconsiders Ads, Paying Influencers, and Its Most Expensive Plan

AI got cheap enough that Duolingo’s most expensive plan may not survive it. I read the earnings call transcript and opened the app to see what is actually changing for learners.

Dhawal Shah Sep 03, 2026

Latest

10 Best Python Courses for 2026: For AI and Data
11 Best Product Management Courses for 2026: Certificates and AI Skills
14 Best AI Courses for 2026: For Beginners & Coders
Guide: How to Sign up for Coursera Courses for Free
[2026] 8000+ OpenCourseWare Courses from Top Institutions

Write for The Report

Visit The Report

600 Free Google Certifications
Trending

Most common

Popular subjects

Business Plan
229 courses
AI Engineering
1,503 courses
Strategic Management
2,021 courses

Popular courses

Justice
Harvard University
Max MSP Programming Course: Structuring Interactive Software for Digital Arts
Stanford University
Discover Dentistry
The University of Sheffield

Organize and share your learning with Class Central Lists.

View our Lists Showcase

Sign up

Log in or Sign up

Log in
Sign up

Countries
United States

Free Online

United States Courses & Certifications

Free online courses and certificates from Harvard, Stanford, MIT, University of Pennsylvania and other top universities in United States. Learn English Pronunciation, COVID-19, Python and other popular topics.

20,000 courses

Showing 20,000 courses

Sort by Relevancy

Filter by

Filters

1. Free course (25,200)
2. With certificate (25,494)
3. Career certificates (1,729)
4. From universities (12,389)
Level
1. Beginner (19,527)
2. Intermediate (16,523)
3. Advanced (3,619)
Duration
1. < 30 mins (2,650)
2. 30 - 60 mins (5,336)
3. 1 - 2 hours (8,505)
4. 2 - 5 hours (4,266)
5. 5 - 10 hours (3,156)
6. 10+ hours (9,390)
Subject
1. Technology (24,992)
2. Business (4,358)
3. STEM (3,200)
4. People & Society (2,661)
5. Health & Wellness (1,733)
6. Certifications (1,356)

Listening, Speaking, and Pronunciation

Practice English word stress, stress in compounds, sentence rhythm and prominence to speak intelligibly, follow rapidly spoken English, and use common idioms and gambits.
- MIT OpenCourseWare
- Self-Paced
- Free Online Course
Physics of COVID-19 Transmission

Quantitatively assess airborne COVID-19 transmission risk indoors using aerosol physics, ventilation, masks, filtration, and room conditions.
- MIT OpenCourseWare
- Self-Paced
- Free Online Course
Python Coding, Part 2

Build Python programs that organize and visualize structured data, simulate real-world systems with classes, and explore decision trees and random forests.
- MITx Online
- Self-Paced
- Free Online Course
Fundamentals of Programming and Machine Learning

Build foundational Python programming skills and understand how data analytics and machine learning models work.
- MITx Online
- Self-Paced
- Free Online Course
Universal AI

Learn AI fundamentals without coding through applications in sustainability, transportation, precision medicine, entrepreneurship, and healthcare.
- MITx Online
- Self-Paced
- Free Online Course
MITx MicroMasters Program in Finance

A finance program combining modern finance foundations, accounting, mathematical methods, and advanced derivatives modeling and strategies.
- MITx Online
- Self-Paced
- Free Online Course
MITx MicroMasters® Program in Supply Chain Management

Build a technical and conceptual foundation for solving complex global supply chain challenges through analytics, design, dynamics, technology, and systems.
- MITx Online
- Self-Paced
- Free Online Course
Principles of Manufacturing

A broad manufacturing curriculum spanning process control, manufacturing systems, engineering management, and supply-chain analytics.
- MITx Online
- Self-Paced
- Free Online Course
Module 0: Introduction to Universal AI

A foundational introduction to how AI agents, machine learning, generative AI, and responsible deployment shape modern artificial intelligence.
- MITx Online
- Self-Paced
- Free Online Course
Introduction to Renormalization
12 ratings

This tutorial provides a modern introduction to renormalization from a complex systems point of view.
- Complexity Explorer
- 1 hour
- Self-Paced
- Free Certificate
Successful Career Development
9 ratings

Build career habitudes: find and work with a mentor, practice NetWeaving, leverage LinkedIn, ask for help well, and adjust your career plan over time.
- Coursera
- 7 weeks, 3 hours a week
- Self-Paced
- Paid Course
Career Certificate
Decentralized Finance (DeFi): The Future of Finance
2183 ratings at Coursera

Learn how DeFi replaces banks and brokerages with smart contracts: study supply, ownership, loans and swaps, protocols like MakerDAO, Compound, Aave and Uniswap, and their risks.
- Coursera
- 16 weeks, 2 hours a week
- Self-Paced
- Paid Course
- 4 courses
Create and use analytics reports with Power BI
12 ratings

Learn to use and build business intelligence reports in Power BI.
- Microsoft Learn
- 3 hours 25 minutes
- Self-Paced
- Free Online Course
Otis College of Art and Design
The Modern Genius: Art and Culture in the 19th Century
12 ratings

Trace the French avant-garde from Realism to Post-Impressionism: academic art challenged, photography and expositions, the tortured-genius artist, Arts and Crafts, and Art Nouveau.
- Kadenze
- 50 hours
- Self-Paced
- Free Online Course
Texas Tech University
Financial Planning Concepts
12 ratings

Learn Financial Planning Concepts such as financial statements, cash-flow statements, balance sheet, ratio analysis, vertical and horizontal analysis and expenses in this quick lecture series
- YouTube
- 30 minutes
- Self-Paced
- Free Video

About Class Central

Class Central helps learners find the best courses on almost any subject, wherever they exist.

Built by learners, since 2011.

Facebook
Twitter
LinkedIn
YouTube
Bluesky

Career Certificates

Generative AI
UX Design
Data Science
Finance
DevOps
Project Management
All Subjects

Coursera
Udemy
Noble Desktop
Udacity
CodeSignal
Boot.dev
All Universities

The Report by Class Central RSS Feed

Series Finale of Online Education
Udemy Earns More, Pays Less
Duolingo's 2026 Strategy
1000s of Free Certificates
Best Courses Guides
Best of All Time
Most Popular of All Time

About Us
Careers
Write for The Report
Contact Us

Class Central © 2011-2026 Privacy Policy

Share

Facebook
Twitter
Bluesky
Email

Never Stop Learning.

Get personalized course recommendations, track subjects and courses with reminders, and more.

Sign up for free

Someone learning on their laptop while sitting on the floor.