Intermediate
Freemium hands-on tech skills labs in virtual environments, supported by an AI study assistant
(Linux, Docker, DevOps, Python, Data Science, Machine Learning, Go, Java, C, C++, HTML, CSS, JavaScript, React)
Contributing
Freemium recreate programming tools from scratch in any language
(Go, Rust, Python, JavaScript, C++, Ruby, Haskell, C#, C, Java, PHP, Elixir, Crystal, Clojure, Zig, Nim)
To the extent possible under law, Karl Horky has waived all copyright and related or neighboring rights to this work.
In lieu of a formal style guide, take care to maintain the existing style of this list.
]]>Beginner
Free guides on fundamental web development concepts
(HTML, CSS, JavaScript, accessibility, performance, React, Ember, Vue, Svelte, Angular, Git, GitHub)
Free game that teaches the CSS Flexbox
(CSS)
Beginner
Free beginner to intermediate guides on web development
(HTML, CSS, JavaScript)
Free learn to code and help nonprofits at the same time
(HTML, CSS, JavaScript, Databases, Git & GitHub, Node.js, React.js, D3.js, Python)
Free beginner to intermediate full-stack courses with Ruby and JS learning paths
(HTML, CSS, JavaScript, Ruby, Rails)
Free self paced, interactive projects to learn Git and GitHub, created and maintained by GitHub's training team
(Git, GitHub)
Freemium wide range of tracks in popular programming languages and development frameworks
(Python, Java, Kotlin, SQL)
Freemium interactive platform for learning data science
(Python, R, SQL, Power BI, ChatGPT)
Intermediate
Free learning roadmap guides with links to educational content
(Fullstack, UX Design, Cyber Security, Computer Science, Blockchain, DevOps, PostgreSQL)
Paid platform for courses in web development, software development, security and more
(HTML, CSS, JavaScript, React, AngularJS, Java, SQL)
Freemium platform with courses in web development and software development
(HTML, CSS, JavaScript, Python, Java, C++)
Advanced
Free video tutorials for web developers and designers
(HTML, CSS, JavaScript, React, Svelte, Vue, Node.js, GraphQL, TypeScript, Deno, GitHub, Figma, Ruby, Drupal, Magento, Wordpress)
Free courses from MIT on advanced computer science topics
(varied and extensive computer science topics, C, C++)
Free courses from Harvard, MIT, and other universities
(varied computer science subjects including theory and programming, data science, algorithms, ...)
Beginner
Free online platform that teaches programming through interactive lessons
(JavaScript, TypeScript, HTML, p5.js, Backend Web Development)
Intermediate
Paid platform for video courses on web development and design
(HTML, CSS, JavaScript, web development, web design)
Advanced
Free programming challenges, hackathons and contests
(dynamic programming, artificial intelligence, algorithms, functional programming, machine learning)
Free programming challenges
(Java, C++, Python, JavaScript, Ruby, C#, PHP and Perl)
Intermediate
Free Learn to code and game at the same time
(C#, C++, Java, JavaScript, Python, Bash, C, Clojure, Dart, F#, Go, Groovy, Haskell, Lua, ObjectiveC, Pascal, Perl, PHP, Ruby, Rust, Scala, Swift, VB.NET)
Beginner
Freemium platform for learning the basics of web development
(HTML, CSS, JavaScript, Node.js, Git, GitHub)
Beginner
Free game that teaches the CSS grid system created by @thomaspark
(CSS)
Intermediate
Mixed guided video courses to build products using new technologies
(JavaScript, CSS, React, Node.js, GraphQL, Redux)
Beginner
Free peer reviewed introductory courses for digital humanists
(Python, R, Unity, QGIS, HTML, Regular Expressions)
Free foundational coding and data science skills for researchers
(Python, R, OpenRefine, Unix Shell, Git)
Intermediate
Free programming course material for beginner, intermediate and advanced levels
(Python, JavaScript, Data Science, artificial intelligence, machine learning, AR & VR)
Beginner
Mixed self paced, interactive projects to learn JavaScript, C, Regular Expressions and computer science in general
(JavaScript, Regular Expressions, Bash, computer science, Ansible)
Advanced
Free mathematical/computer programming problems
(programming, mathematics)
Beginner
Free SQL courses with interactive exercises and quizzes
(SQL, database concepts)
Advanced
Free programming challenges and contests
(artificial intelligence, algorithms, functional programming, machine learning)
Intermediate
Free code challenges - compare your solution with those of others
(JavaScript, CoffeeScript, Ruby, Python, Clojure, Haskell, Java)
Beginner
Freemium platform for learning to code in many different programming languages
(HTML, CSS, JavaScript, jQuery, Python, Ruby, Rails, PHP, C++, Java)
Free interactive 1-hour courses to learn the very basics of web development
(HTML, CSS, JavaScript, SQL)
Paid platform for courses how to build websites & apps
(Web Design, Front End Web Development, Rails, iOS, Android, PHP)
Free tutorial for how to do layout with CSS
(CSS)
Freemium marketplace of courses from third party providers - quality may vary
(HTML, CSS, JavaScript, Ruby, Rails, Python, iOS, Android)
Freemium platform for basic web and app development courses
(HTML, CSS, JavaScript)
Free beginner and intermediate guides on web development
(HTML, CSS, JavaScript)
Intermediate
Free intermediate to advanced courses on how to program drawings, animations, games and webpages and more advanced computer science topics
(HTML, CSS, JavaScript, SQL, algorithms, cryptography)
Free platform for computer science and web development courses
(HTML, CSS, JavaScript, data science, Python, computer science topics)
Paid book and course for beginner through intermediate Python programming
(Python, object-oriented programming, web development)
Free online book covering all stages of creating a Ruby on Rails application
(HTML, CSS, JavaScript, Ruby, Rails)
Paid platform for mentored web and mobile development courses from industry experts
(web development, frontend web development, AngularJS, Android, iOS)
Free crowdsourced mentorship platform of programming exercises and code reviews
(Clojure, CoffeeScript, C++, C#, Elixir, Erlang, F#, Go, Haskell, JavaScript, Common Lisp, Lua, Objective-C, OCaml, Perl 5, PL/SQL, Python, Ruby, Scala, Swift)
Freemium intermediate to advanced programming problems
(programming)
Free practice problems in Python and Java
(Python, Java)
Advanced
Mixed platform for courses from universities and organizations worldwide
(varied computer science subjects including theory and programming, data science, algorithms, ...)
Free university-level courses scoured from around the internet
(varied and extensive computer science topics, ...)
Free graphs of interconnected topics required to master concepts
(programming, machine learning)