Khan Academy is not-for-profit with the goal of changing education for the better by providing a free world-class education to anyone anywhere.

Free Code Camp's open source community help you build a job-worthy portfolio of real apps used by real people, while helping nonprofits.

Explore free interactive coding courses in web development, data science, and various languages. Codecademy offers a fun, collaborative learning environment with community support, personalized paths, skill assessments, and more, covering both foundational and advanced concepts.

The platform connects 73 million students with 250,000 courses on subjects like programming, marketing, and design. Features lifetime access and 75+ language options, plus offline learning and mobile app support. Includes quizzes, instructor Q&A, and more.

Learning has never been this social and accessible for so many! Bit-sized videos and fun practice sessions grab your attention and keep you focused, for guaranteed best results!.

Code.org is a non-profit whose goal is to expose all students to computer programming. We believe that computer programming is a liberal art; it's something EVERY student in the world should be exposed to at some point in their childhood education.

Pluralsight is the global leader in high-quality online training for hardcore developers and IT pros. The revolutionary Pluralsight training library provides techies with instant access to a rich collection of online training courses delivered by industry authorities.

LeetCode is a platform for learning and improving coding skills with the goal of being fully prepared for programming interviews. Choose problems to solve from categories such as System Design, Algorithms and Database, join code contests and engage in mock interviews.

Project Euler is a series of challenging mathematical/computer programming problems that will require more than just mathematical insights to solve.

Treehouse teaches Web Design, Development and iOS to people everywhere, in order to help them achieve their dreams and change the world.

Trusted by over 500,000 learners and developers, Zenva provides world-class training in programming and computer science. Our mission is to empower people to make a positive impact in the world through technology and games.

When learning to code, most people get stuck on the "bridge" between memorizing syntax and understanding the logic that makes it all work. We believe the most effective way to learn a programming language is to break the process into three phases: