Repositories list

• build-your-own-shell

  Public
  Definition for the shell challenge.

  Shell

  •

  MIT License

  •18•44•0•6•Updated Mar 26, 2026Mar 26, 2026

• redis-tester

  Public

  codecrafters-io/redis-tester’s past year of commit activity
  Go

  •20•27•0•8•Updated Mar 26, 2026Mar 26, 2026

• language-dashboard

  Public
  Language dashboard for CodeCrafters challenges.

  Python

  •

  MIT License

  •2•14•0•0•Updated Mar 26, 2026Mar 26, 2026

• build-your-own-interpreter

  Public
  Definition for the interpreter challenge.

  Shell

  •

  MIT License

  •16•52•0•4•Updated Mar 25, 2026Mar 25, 2026

• language-templates

  Public
  Dockerfile

  •9•5•0•3•Updated Mar 25, 2026Mar 25, 2026

• build-your-own-redis

  Public
  Definition for the redis challenge.

  Shell

  •

  MIT License

  •68•304•0•20•Updated Mar 25, 2026Mar 25, 2026

• build-your-own-git

  Public
  Definition for the git challenge.

  Shell

  •

  MIT License

  •25•132•4•6•Updated Mar 25, 2026Mar 25, 2026

• frontend

  Public
  Rebuild complex systems from scratch

  emberprogramming-challenges

  emberprogramming-challenges

  TypeScript

  •

  Other

  •27•114•7•22•Updated Mar 25, 2026Mar 25, 2026

• ccbench

  Public
  A benchmark for coding agents

  Rust

  •4•26•1•0•Updated Mar 14, 2026Mar 14, 2026

• build-your-own-grep

  Public
  Definition for the grep challenge.

  Shell

  •

  MIT License

  •13•24•0•3•Updated Mar 12, 2026Mar 12, 2026

• build-your-own-kafka

  Public
  Definition for the kafka challenge.

  Shell

  •

  MIT License

  •12•41•0•7•Updated Mar 11, 2026Mar 11, 2026

• cli

  Public
  CodeCrafters CLI to run tests

  Go

  •

  MIT License

  •13•22•10•1•Updated Mar 10, 2026Mar 10, 2026

• homebrew-tap

  Public

  codecrafters-io/homebrew-tap’s past year of commit activity
  Homebrew Tap

  Ruby

  •

  MIT License

  •1•1•0•0•Updated Mar 10, 2026Mar 10, 2026

• build-your-own-http-server

  Public
  Definition for the http-server challenge.

  Shell

  •

  MIT License

  •34•114•2•1•Updated Mar 10, 2026Mar 10, 2026

• binspec

  Public
  TypeScript

  •6•60•5•1•Updated Mar 9, 2026Mar 9, 2026

• build-your-own-claude-code

  Public
  Definition for the claude-code challenge.

  Shell

  •

  MIT License

  •4•15•0•18•Updated Mar 8, 2026Mar 8, 2026

• build-your-own-dns-server

  Public
  Definition for the dns-server challenge.

  Shell

  •

  MIT License

  •14•20•2•2•Updated Mar 8, 2026Mar 8, 2026

• build-your-own-sqlite

  Public
  Definition for the sqlite challenge.

  Shell

  •

  MIT License

  •30•127•1•2•Updated Mar 8, 2026Mar 8, 2026

• build-your-own-bittorrent

  Public
  Definition for the bittorrent challenge.

  C++

  •

  MIT License

  •18•82•1•3•Updated Mar 8, 2026Mar 8, 2026

• course-sdk

  Public
  A rewrite of course-sdk, with better developer ergonomics

  TypeScript

  •

  MIT License

  •23•85•2•1•Updated Mar 8, 2026Mar 8, 2026

• shell-tester

  Public
  Tester for the shell challenge.

  Go

  •5•7•0•4•Updated Mar 6, 2026Mar 6, 2026

• docs

  Public
  Documentation for codecrafters users and contributors

  Ruby

  •21•19•1•0•Updated Feb 27, 2026Feb 27, 2026

• tester-utils

  Public
  Go

  •

  MIT License

  •5•3•0•0•Updated Feb 26, 2026Feb 26, 2026

• claude-code-tester

  Public
  Tester for the claude-code challenge.

  Go

  •0•1•0•0•Updated Feb 23, 2026Feb 23, 2026

• build-your-own-x

  Public
  Master programming by recreating your favorite technologies from scratch.

  programmingtutorialsfree+ 3

  programmingtutorialsfreeawesome-listtutorial-codetutorial-exercises

  Markdown

  •46k•484k•242•211•Updated Feb 21, 2026Feb 21, 2026

• llm-rules-test

  Public
  Custom runner for LLM rules that help validate stage instructions

  TypeScript

  •1•1•0•0•Updated Feb 19, 2026Feb 19, 2026

• sqlite-tester

  Public
  Go

  •7•9•0•2•Updated Feb 13, 2026Feb 13, 2026

• grep-tester

  Public
  Go

  •3•2•0•0•Updated Feb 12, 2026Feb 12, 2026

• bittorrent-tester

  Public
  Tester for the "Build your own BitTorrent" challenge

  Go

  •4•6•0•0•Updated Feb 8, 2026Feb 8, 2026

• interpreter-tester

  Public
  Tester for the interpreter challenge.

  Go

  •5•5•1•1•Updated Feb 8, 2026Feb 8, 2026