Skip to content

@codecrafters-io CodeCrafters

Change the repository type filter

All

    Repositories list

    134 repositories

    • frontend

      Public
      Rebuild complex systems from scratch
      emberprogramming-challenges
      emberprogramming-challenges
      TypeScript
      •
      Other
      •27•115•6•22•Updated Apr 17, 2026Apr 17, 2026

    • language-dashboard

      Public
      Language dashboard for CodeCrafters challenges.
      Python
      •
      MIT License
      •2•15•0•0•Updated Apr 16, 2026Apr 16, 2026

    • build-your-own-redis

      Public
      Definition for the redis challenge.
      Shell
      •
      MIT License
      •68•312•0•38•Updated Apr 16, 2026Apr 16, 2026

    • language-templates

      Public
      Shell
      •9•5•0•3•Updated Apr 16, 2026Apr 16, 2026

    • build-your-own-git

      Public
      Definition for the git challenge.
      Shell
      •
      MIT License
      •25•132•4•6•Updated Apr 16, 2026Apr 16, 2026

    • course-sdk

      Public
      A rewrite of course-sdk, with better developer ergonomics
      TypeScript
      •
      MIT License
      •23•87•2•1•Updated Apr 16, 2026Apr 16, 2026

    • build-your-own-shell

      Public
      Definition for the shell challenge.
      Shell
      •
      MIT License
      •18•44•0•8•Updated Apr 16, 2026Apr 16, 2026

    • shell-tester

      Public
      Tester for the shell challenge.
      Go
      •5•7•0•7•Updated Apr 16, 2026Apr 16, 2026

    • build-your-own-http-server

      Public
      Definition for the http-server challenge.
      Shell
      •
      MIT License
      •35•114•2•2•Updated Apr 14, 2026Apr 14, 2026

    • tester-utils

      Public
      Go
      •
      MIT License
      •5•3•0•0•Updated Apr 14, 2026Apr 14, 2026

    • build-your-own-claude-code

      Public
      Definition for the claude-code challenge.
      Shell
      •
      MIT License
      •4•16•0•18•Updated Apr 13, 2026Apr 13, 2026

    • redis-tester

      Public
      Go
      •20•28•0•4•Updated Apr 13, 2026Apr 13, 2026

    • build-your-own-kafka

      Public
      Definition for the kafka challenge.
      Shell
      •
      MIT License
      •12•43•0•7•Updated Apr 13, 2026Apr 13, 2026

    • build-your-own-bittorrent

      Public
      Definition for the bittorrent challenge.
      C++
      •
      MIT License
      •18•82•1•3•Updated Apr 13, 2026Apr 13, 2026

    • build-your-own-interpreter

      Public
      Definition for the interpreter challenge.
      Shell
      •
      MIT License
      •16•53•0•4•Updated Apr 13, 2026Apr 13, 2026

    • build-your-own-grep

      Public
      Definition for the grep challenge.
      Shell
      •
      MIT License
      •13•24•0•3•Updated Apr 13, 2026Apr 13, 2026

    • build-your-own-sqlite

      Public
      Definition for the sqlite challenge.
      Shell
      •
      MIT License
      •31•130•1•2•Updated Apr 13, 2026Apr 13, 2026

    • build-your-own-dns-server

      Public
      Definition for the dns-server challenge.
      Shell
      •
      MIT License
      •14•20•2•2•Updated Apr 13, 2026Apr 13, 2026

    • kafka-tester

      Public
      Tester for the kafka challenge.
      Go
      •
      MIT License
      •3•4•0•0•Updated Mar 31, 2026Mar 31, 2026

    • ccbench

      Public
      A benchmark for coding agents
      Rust
      •4•28•1•0•Updated Mar 14, 2026Mar 14, 2026

    • cli

      Public
      CodeCrafters CLI to run tests
      Go
      •
      MIT License
      •15•23•10•2•Updated Mar 10, 2026Mar 10, 2026

    • homebrew-tap

      Public
      Homebrew Tap
      Ruby
      •
      MIT License
      •1•1•0•0•Updated Mar 10, 2026Mar 10, 2026

    • binspec

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

    • docs

      Public
      Documentation for codecrafters users and contributors
      Ruby
      •21•20•1•0•Updated Feb 27, 2026Feb 27, 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
      programmingtutorialsfreeawesome-listtutorial-codetutorial-exercises
      Markdown
      •46k•491k•249•217•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
    ProTip! When viewing an organization's repositories, you can use the props. filter to filter by custom property.