Repositories list

• build-your-own-claude-code

  Public

  codecrafters-io/build-your-own-claude-code’s past year of commit activity
  Definition for the claude-code challenge.

  Shell

  •

  MIT License

  •3•5•0•26•Updated Feb 23, 2026Feb 23, 2026

• course-sdk

  Public

  codecrafters-io/course-sdk’s past year of commit activity
  A rewrite of course-sdk, with better developer ergonomics

  TypeScript

  •

  MIT License

  •23•79•2•1•Updated Feb 23, 2026Feb 23, 2026

• shell-tester

  Public

  codecrafters-io/shell-tester’s past year of commit activity
  Tester for the shell challenge.

  Go

  •5•7•0•10•Updated Feb 23, 2026Feb 23, 2026

• build-your-own-shell

  Public

  codecrafters-io/build-your-own-shell’s past year of commit activity
  Definition for the shell challenge.

  Shell

  •

  MIT License

  •17•36•0•7•Updated Feb 23, 2026Feb 23, 2026

• language-templates

  Public

  codecrafters-io/language-templates’s past year of commit activity
  Dockerfile

  •8•5•0•2•Updated Feb 23, 2026Feb 23, 2026

• cli

  Public

  codecrafters-io/cli’s past year of commit activity
  CodeCrafters CLI to run tests

  Go

  •

  MIT License

  •12•19•8•1•Updated Feb 23, 2026Feb 23, 2026

• frontend

  Public

  codecrafters-io/frontend’s past year of commit activity
  Rebuild complex systems from scratch

  emberprogramming-challenges

  TypeScript

  •

  Other

  •28•109•5•18•Updated Feb 23, 2026Feb 23, 2026

• claude-code-tester

  Public

  codecrafters-io/claude-code-tester’s past year of commit activity
  Tester for the claude-code challenge.

  Go

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

• homebrew-tap

  Public

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

  Ruby

  •

  MIT License

  •1•1•0•0•Updated Feb 22, 2026Feb 22, 2026

• build-your-own-x

  Public

  codecrafters-io/build-your-own-x’s past year of commit activity
  Master programming by recreating your favorite technologies from scratch.

  programmingtutorialsfree+ 3awesome-listtutorial-codetutorial-exercises

  Markdown

  •44k•468k•233•197•Updated Feb 21, 2026Feb 21, 2026

• llm-rules-test

  Public

  codecrafters-io/llm-rules-test’s past year of commit activity
  Custom runner for LLM rules that help validate stage instructions

  TypeScript

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

• build-your-own-git

  Public

  codecrafters-io/build-your-own-git’s past year of commit activity
  Definition for the git challenge.

  Shell

  •

  MIT License

  •25•130•4•6•Updated Feb 19, 2026Feb 19, 2026

• language-dashboard

  Public

  codecrafters-io/language-dashboard’s past year of commit activity
  Language dashboard for CodeCrafters challenges.

  Python

  •

  MIT License

  •2•14•0•0•Updated Feb 19, 2026Feb 19, 2026

• docs

  Public

  codecrafters-io/docs’s past year of commit activity
  Documentation for codecrafters users and contributors

  Ruby

  •20•19•1•0•Updated Feb 17, 2026Feb 17, 2026

• build-your-own-redis

  Public

  codecrafters-io/build-your-own-redis’s past year of commit activity
  Definition for the redis challenge.

  Shell

  •

  MIT License

  •67•295•0•18•Updated Feb 16, 2026Feb 16, 2026

• build-your-own-interpreter

  Public

  codecrafters-io/build-your-own-interpreter’s past year of commit activity
  Definition for the interpreter challenge.

  Shell

  •

  MIT License

  •17•51•0•3•Updated Feb 16, 2026Feb 16, 2026

• build-your-own-sqlite

  Public

  codecrafters-io/build-your-own-sqlite’s past year of commit activity
  Definition for the sqlite challenge.

  Shell

  •

  MIT License

  •30•124•1•2•Updated Feb 16, 2026Feb 16, 2026

• build-your-own-dns-server

  Public

  codecrafters-io/build-your-own-dns-server’s past year of commit activity
  Definition for the dns-server challenge.

  Shell

  •

  MIT License

  •14•20•2•2•Updated Feb 16, 2026Feb 16, 2026

• build-your-own-grep

  Public

  codecrafters-io/build-your-own-grep’s past year of commit activity
  Definition for the grep challenge.

  Shell

  •

  MIT License

  •14•24•0•2•Updated Feb 16, 2026Feb 16, 2026

• build-your-own-http-server

  Public

  codecrafters-io/build-your-own-http-server’s past year of commit activity
  Definition for the http-server challenge.

  Shell

  •

  MIT License

  •34•115•2•2•Updated Feb 16, 2026Feb 16, 2026

• build-your-own-kafka

  Public

  codecrafters-io/build-your-own-kafka’s past year of commit activity
  Definition for the kafka challenge.

  Shell

  •

  MIT License

  •12•38•0•7•Updated Feb 16, 2026Feb 16, 2026

• build-your-own-bittorrent

  Public

  codecrafters-io/build-your-own-bittorrent’s past year of commit activity
  Definition for the bittorrent challenge.

  C++

  •

  MIT License

  •18•80•1•3•Updated Feb 16, 2026Feb 16, 2026

• binspec

  Public
  TypeScript

  •6•58•5•1•Updated Feb 16, 2026Feb 16, 2026

• sqlite-tester

  Public
  Go

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

• ccbench

  Public
  A benchmark for coding agents

  Rust

  •1•8•1•0•Updated Feb 12, 2026Feb 12, 2026

• grep-tester

  Public
  Go

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

• tester-utils

  Public
  Go

  •

  MIT License

  •5•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

• git-tester

  Public
  Go

  •8•9•0•6•Updated Feb 8, 2026Feb 8, 2026