freeCodeCamp.org's open-source codebase and curriculum. Learn math, programming, and computer science for free.

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• Updated Nov 12, 2026
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📚 Freely available programming books

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• Updated Nov 7, 2026
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All Algorithms implemented in Python

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• Updated Nov 11, 2026
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Free domain registration and practical DNS learning resources for everyone.

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• Updated Aug 12, 2026
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A book series (2 published editions) on the JS language.

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• Updated Oct 31, 2026

《Hello 算法》：动画图解、一键运行的数据结构与算法教程。支持简中、繁中、English、日本語，提供 Python, Java, C++, C, C#, JS, Go, Swift, Rust, Ruby, Kotlin, TS, Dart 等代码实现

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• Updated Nov 10, 2026
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Coding articles to level up your development skills

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• Updated Nov 11, 2026
• JavaScript

24 Lessons, 12 Weeks, Get Started as a Web Developer

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• Updated Nov 11, 2026
• JavaScript

12 weeks, 26 lessons, 52 quizzes, classic Machine Learning for all

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• Updated Nov 7, 2026
• Jupyter Notebook

FCC China open source codebase and curriculum. Learn to code and help nonprofits.

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• Updated Jul 16, 2023
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🖤 Create and share beautiful images of your source code

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• Updated Nov 5, 2026
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A GPT-4 AI Tutor Prompt for customizable personalized learning experiences.

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• Updated Sep 30, 2025

p5.js is a client-side JS platform that empowers artists, designers, students, and anyone to learn to code and express themselves creatively on the web. It is based on the core principles of Processing. Looking for p5.js 2.0? http://beta.p5js.org

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• Updated Nov 11, 2026
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Collection of various algorithms in mathematics, machine learning, computer science, physics, etc implemented in C for educational purposes.

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• Updated Aug 7, 2024
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Jargon from the functional programming world in simple terms!

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• Updated Oct 4, 2026
• JavaScript

💿 Free software that works great, and also happens to be open-source Python.

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• Updated Oct 18, 2026
• Jupyter Notebook

Pragmatic, balanced FP in JavaScript. @FLJSBook on twitter.

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• Updated Dec 26, 2023
• JavaScript

Short CSS code snippets for all your development needs

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• Updated May 7, 2023
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Learning Vim and Vimscript doesn't have to be hard. This is the guide that you're looking for 📖

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• Updated Sep 7, 2026
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Source code for Hacker101.com - a free online web and mobile security class.

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• Updated Feb 22, 2025
• SCSS