Free coding courses — browse all 94

Every Libre Academy course is free and interactive: read, write code in a real editor, and let hidden tests grade you. 94 courses across 21 languages, from beginner tracks to full books and challenge packs — no paywall, no sign-up.

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Beta — Polished and in final testing — feedback welcome.

• JavaScript for Beginners — JavaScript · 38 lessons
• Learning JavaScript & TypeScript — TypeScript · 157 lessons
• Mastering Bitcoin — JavaScript · 87 lessons
• Mastering Ethereum — JavaScript · 133 lessons
• Solana Programs: Rust on the SVM — Rust · 78 lessons
• Javascript Challenges — JavaScript · 47 lessons
• Python Challenges — Python · 42 lessons
• React Native Challenges — React Native · 8 lessons
• C Challenges — C · 67 lessons
• Cpp Challenges — C++ · 51 lessons
• Java Challenges — Java · 58 lessons
• Kotlin Challenges — Kotlin · 46 lessons
• Csharp Challenges — C# · 46 lessons
• Swift Challenges — Swift · 55 lessons
• Assembly Challenges (arm64 macOS) — Assembly · 94 lessons
• Ruby Challenges — ruby · 120 lessons
• Lua Challenges — lua · 120 lessons
• Dart Challenges — dart · 120 lessons
• Haskell Challenges — haskell · 120 lessons
• Scala Challenges — scala · 120 lessons
• SQL Challenges — SQL · 120 lessons
• Elixir Challenges — elixir · 120 lessons
• Zig Challenges — zig · 120 lessons
• Move Challenges — move · 120 lessons
• Cairo Challenges — cairo · 120 lessons
• Sway Challenges — sway · 120 lessons
• Rust Challenges — Rust · 120 lessons
• Eloquent JavaScript — JavaScript · 33 lessons
• Testing Rust — Rust · 55 lessons
• Testing JavaScript — JavaScript · 51 lessons
• Dive into Deep Learning, from Scratch — Python · 45 lessons
• Automate the Boring Stuff with Python — Python · 45 lessons
• Open Data Structures — Python · 45 lessons

Alpha — In the collection — content stable, polishing in progress.

• A to Zig — zig · 105 lessons
• Learning Ledger — TypeScript · 69 lessons
• Exercism C Track — C · 84 lessons
• Exercism C++ Track — C++ · 100 lessons
• Exercism C# Track — C# · 178 lessons
• Exercism Dart Track — dart · 78 lessons
• Exercism Elixir Track — elixir · 168 lessons
• Exercism Haskell Track — haskell · 111 lessons
• Exercism Java Track — Java · 158 lessons
• Exercism JavaScript Track — JavaScript · 158 lessons
• Exercism Kotlin Track — Kotlin · 88 lessons
• Exercism Lua Track — lua · 120 lessons
• Exercism Python Track — Python · 146 lessons
• Exercism Ruby Track — ruby · 120 lessons
• Exercism Rust Track — Rust · 109 lessons
• Exercism Scala Track — scala · 95 lessons
• Exercism Swift Track — Swift · 116 lessons
• Exercism TypeScript Track — TypeScript · 106 lessons
• Exercism Zig Track — zig · 98 lessons
• Learning Python — Python · 148 lessons
• Python for Beginners — Python · 47 lessons

Unreviewed — Early drafts — content still expanding.

• The Rust Programming Language — Rust · 168 lessons
• The Rustonomicon — Rust · 154 lessons
• Learning Go — Go · 258 lessons
• Algorithms (Erickson) — Python · 23 lessons
• Astro Fundamentals — Astro · 19 lessons
• Bun: The Complete Runtime — Bun · 88 lessons
• Go Challenges — Go · 334 lessons
• Clojure Koans — clojure · 27 lessons
• Composing Programs — Python · 23 lessons
• Cplings — C++ · 44 lessons
• Crafting Interpreters (JavaScript) — JavaScript · 30 lessons
• Cryptography Fundamentals: Hashes to ZK — TypeScript · 82 lessons
• Exercism Go Track — Go · 165 lessons
• Exlings — elixir · 27 lessons
• F# Koans — fsharp · 20 lessons
• Functional-Light JavaScript — JavaScript · 23 lessons
• Golings — Go · 43 lessons
• Haskellings — haskell · 51 lessons
• HTMX Fundamentals — HTMX · 17 lessons
• Introduction to Computer Organization: ARM — Assembly · 389 lessons
• Java Koans — Java · 41 lessons
• The Modern JavaScript Tutorial — Fundamentals — JavaScript · 31 lessons
• JavaScript Koans — JavaScript · 8 lessons
• Kotlin Koans — Kotlin · 43 lessons
• Mastering Lightning Network — JavaScript · 18 lessons
• Pro Git — JavaScript · 12 lessons
• Python Koans — Python · 38 lessons
• React Native — React Native · 78 lessons
• The Async Book (Rust) — Rust · 22 lessons
• Rustlings — Rust · 94 lessons
• Select Star SQL — SQL · 29 lessons
• Solidity: Smart Contracts from First Principles — Solidity · 76 lessons
• SolidJS Fundamentals — SolidJS · 18 lessons
• Svelte 5 Complete — Svelte · 72 lessons
• Swiftlings — Swift · 94 lessons
• viem and ethers.js: Talking to Ethereum from TypeScript — TypeScript · 77 lessons
• Vyper Fundamentals: Pythonic Smart Contracts — vyper · 68 lessons
• You Don't Know JS Yet — JavaScript · 25 lessons
• Ziglings — zig · 116 lessons
• Learning React Native — JavaScript · 164 lessons