Best Online Courses in 2026

Build skills with courses, certificates, and degrees online from world-class universities and companies.

Key Coursera features:

Headquarters

Calculate in a notebook and share — from everyday math to engineering.

Key Calcumber features:

🌿 Naturally type expressions 🔗 Copy and share 🧩 Variables and constants 🧪 Scientific functions

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Online Courses - Learn Anything, On Your Schedule.

Key Udemy features:

Headquarters

Learn to code by helping nonprofits.

Key Free Code Camp features:

Comprehensive Curriculum Project-Based Learning Community Support Real-World Non-Profit Projects

Learn the technical skills you need for the job you want. As leaders in online education and learning to code, we’ve taught over 45 million people using a tested curriculum and an interactive learning environment.

Key Codecademy features:

Interactive Learning Wide Range of Courses Beginner-Friendly Flexible Learning Paths

Best Courses. Top Institutions. Learn anytime, anywhere.

Key edX features:

High-Quality Courses Variety of Subjects Verified Certificates Flexible Learning

Khan Academy offers online tools to help students learn about a variety of important school subjects. Tools include videos, practice exercises, and materials for instructors. Read more about Khan Academy.

Key Khan Academy features:

Free Access Wide Range of Subjects Personalized Learning High-Quality Content

Practice and level up your development skills and prepare for technical interviews.

Key LeetCode features:

Comprehensive Problem Library Active Community Interview Preparation Company-specific Questions

Open Source

How it works. This is the website we wish we had when we were learning on our own. We scour the internet looking for only the best resources to supplement your learning and present them in a logical order.

Key The Odin Project features:

Comprehensive Curriculum Project-Based Learning Community Support Free of Cost

Open Source

Download and solve practice problems in over 30 different languages.

Key Exercism features:

Free Access Mentorship Wide Variety of Languages Structured Learning Tracks

Open Source

Join Udacity to learn the latest in Deep Learning, Machine Learning, Web Development & more, with Nanodegree programs & free online courses.

Key Udacity features:

Industry-Relevant Curriculum Hands-On Projects Mentorship and Support Flexible Learning

Pluralsight is a learning management system (LMS) that helps aspiring tech professionals learn the basics of the trade and lets established professionals expand their skill sets.

Key Pluralsight features:

Comprehensive Course Library Skill Assessments Expert Instructors Offline Access

Project Euler is a series of challenging mathematical/computer programming problems that will...

Key Project Euler features:

Problem-Solving Skills Programming Practice Mathematical Insight Community

Open Source

Achieve code mastery through challenge.

Key Codewars features:

Wide Range of Challenges User Engagement Multiple Languages Gamification

Open Source