BeginnerDocumentationEnglish & French▲ 42 votes
MDN: Learn Web Development
Mozilla's structured curriculum covering HTML, CSS and JavaScript from zero, maintained by the people who document the web platform itself.
Browse resources
31 resources
BeginnerCourseEnglish▲ 40 votes
Harvard CS50x: Introduction to Computer Science
Harvard's legendary intro to computer science: C, Python, SQL, algorithms and web development, free for everyone.
BeginnerCourseEnglish▲ 38 votes
The Odin Project
A full open-source curriculum for becoming a web developer: HTML, CSS, JavaScript, Node.js and Ruby paths with real projects throughout.
BeginnerInteractiveEnglish & French▲ 35 votes
freeCodeCamp Curriculum
Thousands of hours of interactive lessons and certification projects covering web development, JavaScript, data analysis and more.
IntermediateBookEnglish & French▲ 33 votes
The Modern JavaScript Tutorial
From fundamentals to advanced topics like closures, prototypes and the event loop — the reference free JavaScript book, kept current.
BeginnerVideoFrench▲ 31 votes
Grafikart: Free Video Courses (French)
Hundreds of hours of French-language video courses: HTML, CSS, JavaScript, PHP and modern tooling. A francophone community institution.
BeginnerDocumentationEnglish & French▲ 30 votes
The Official Python Tutorial
The canonical introduction to Python from the language's own documentation, available in a maintained French translation.
BeginnerToolEnglish▲ 29 votes
Developer Roadmaps
Community-maintained visual roadmaps for frontend, backend, DevOps and 20+ other paths, with linked resources per step.
IntermediateDocumentationEnglish & French▲ 28 votes
React: The Official Tutorial
The official interactive introduction to React: components, state, effects and thinking in React, with editable examples.
IntermediateInteractiveEnglish▲ 27 votes
PortSwigger Web Security Academy
Free, hands-on labs covering the whole of web security — XSS, SQL injection, auth flaws — from the makers of Burp Suite.
IntermediateBookEnglish▲ 26 votes
The Rust Programming Language (The Book)
The official Rust book: ownership, borrowing, traits and fearless concurrency, free online with runnable examples.
IntermediateBookEnglish & French▲ 25 votes
Pro Git (2nd Edition)
The complete Git reference book, free online, with a maintained French translation — from first commit to plumbing internals.
IntermediateInteractiveEnglish▲ 24 votes
Exercism
Practice 70+ programming languages with small exercises and free human mentoring from volunteers.
AdvancedInteractiveEnglish & French▲ 23 votes
Root Me: Hacking & Security Challenges (French)
500+ security challenges with strong French-language coverage: web, crypto, forensics, networking. A francophone security-training reference.
IntermediateDocumentationEnglish▲ 22 votes
The TypeScript Handbook
The official guide to TypeScript's type system, from everyday types to generics and declaration files.
BeginnerInteractiveEnglish & French▲ 22 votes
Learn Git Branching
A visual, interactive playground for mastering branches, rebases and remotes — fully translated into French.
BeginnerInteractiveEnglish & French▲ 21 votes
Flexbox Froggy
Learn CSS flexbox by guiding a frog to its lily pad through 24 short interactive puzzles.
BeginnerInteractiveEnglish▲ 20 votes
SQLBolt
Interactive SQL lessons and exercises that run in the browser — the fastest path from zero to confident SELECTs and JOINs.
IntermediateCourseEnglish▲ 19 votes
web.dev Learn
Google's course collection on modern web development: CSS, accessibility, performance, forms and PWA, written by platform experts.
BeginnerArticleFrench▲ 18 votes
Zeste de Savoir: Computing Library (French)
Community-written, peer-reviewed French tutorials and courses on programming, systems and networking. Run by a non-profit.
BeginnerDocumentationEnglish▲ 18 votes
Docker: Get Started
The official Docker introduction: images, containers, volumes and multi-container apps with Compose.
BeginnerCourseEnglish▲ 17 votes
Kaggle Learn
Short, hands-on micro-courses on Python, pandas, SQL and machine learning with in-browser notebooks.
IntermediateDocumentationEnglish▲ 16 votes
OWASP Cheat Sheet Series
Concise, actionable secure-coding guidance for dozens of topics, maintained by the OWASP community.
IntermediateInteractiveFrench▲ 16 votes
France-IOI: Programming & Algorithmics (French)
Progressive French-language algorithmics and programming tracks with an automated judge. Also trains for programming olympiads.