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    132 repositories

    • build-your-own-shell

      Public
      Definition for the shell challenge.
      Shell
      •
      MIT License
      •22•55•0•5•Updated Jul 31, 2026Jul 31, 2026

    • language-templates

      Public
      Shell
      •11•8•0•3•Updated Jul 31, 2026Jul 31, 2026

    • course-sdk

      Public
      A rewrite of course-sdk, with better developer ergonomics
      TypeScript
      •
      MIT License
      •31•111•2•1•Updated Jul 30, 2026Jul 30, 2026

    • build-your-own-claude-code

      Public
      Definition for the claude-code challenge.
      Shell
      •
      MIT License
      •10•35•0•18•Updated Jul 30, 2026Jul 30, 2026

    • language-dashboard

      Public
      Language dashboard for CodeCrafters challenges.
      Python
      •
      MIT License
      •3•22•0•0•Updated Jul 24, 2026Jul 24, 2026

    • build-your-own-x

      Public
      Master programming by recreating your favorite technologies from scratch.
      programmingtutorialsfree
      programmingtutorialsfreeawesome-listtutorial-codetutorial-exercises
      Markdown
      •51k•536k•267•352•Updated Jul 14, 2026Jul 14, 2026

    • frontend

      Public
      Rebuild complex systems from scratch
      emberprogramming-challenges
      emberprogramming-challenges
      TypeScript
      •
      Other
      •29•123•6•15•Updated Jul 10, 2026Jul 10, 2026

    • redis-tester

      Public
      Go
      •20•30•0•3•Updated Jun 29, 2026Jun 29, 2026

    • ccbench

      Public
      A benchmark for coding agents
      Rust
      •5•38•1•0•Updated Jun 25, 2026Jun 25, 2026

    • build-your-own-redis

      Public
      Definition for the redis challenge.
      Shell
      •
      MIT License
      •80•359•0•17•Updated Jun 23, 2026Jun 23, 2026

    • build-your-own-grep

      Public
      Definition for the grep challenge.
      Shell
      •
      MIT License
      •14•28•0•2•Updated Jun 23, 2026Jun 23, 2026

    • build-your-own-bittorrent

      Public
      Definition for the bittorrent challenge.
      C++
      •
      MIT License
      •22•95•1•3•Updated Jun 23, 2026Jun 23, 2026

    • build-your-own-git

      Public
      Definition for the git challenge.
      Shell
      •
      MIT License
      •28•150•4•6•Updated Jun 23, 2026Jun 23, 2026

    • build-your-own-kafka

      Public
      Definition for the kafka challenge.
      Shell
      •
      MIT License
      •15•57•0•3•Updated Jun 23, 2026Jun 23, 2026

    • build-your-own-http-server

      Public
      Definition for the http-server challenge.
      Shell
      •
      MIT License
      •37•123•2•1•Updated Jun 23, 2026Jun 23, 2026

    • build-your-own-dns-server

      Public
      Definition for the dns-server challenge.
      Shell
      •
      MIT License
      •17•29•2•2•Updated Jun 23, 2026Jun 23, 2026

    • build-your-own-interpreter

      Public
      Definition for the interpreter challenge.
      Shell
      •
      MIT License
      •17•60•0•3•Updated Jun 23, 2026Jun 23, 2026

    • build-your-own-sqlite

      Public
      Definition for the sqlite challenge.
      Shell
      •
      MIT License
      •37•153•1•2•Updated Jun 23, 2026Jun 23, 2026

    • lobbyside-react

      Public
      React SDK for rendering custom Lobbyside widget UIs against live state — the host-side identity, CTA, and join-call action without our default card.
      TypeScript
      •1•3•0•1•Updated Jun 22, 2026Jun 22, 2026

    • shell-tester

      Public
      Tester for the shell challenge.
      Go
      •6•11•0•4•Updated Jun 17, 2026Jun 17, 2026

    • ansi101

      Public
      ANSI Escape Sequence Visualizer
      TypeScript
      •1•10•1•0•Updated Jun 5, 2026Jun 5, 2026

    • tester-template

      Public template
      Go
      •4•2•0•0•Updated Apr 22, 2026Apr 22, 2026

    • dns-server-tester

      Public
      Tester for the dns-server challenge.
      Go
      •6•7•0•0•Updated Apr 22, 2026Apr 22, 2026

    • homebrew-tap

      Public
      Homebrew Tap
      Ruby
      •
      MIT License
      •2•2•0•0•Updated Apr 21, 2026Apr 21, 2026

    • cli

      Public
      CodeCrafters CLI to run tests
      Go
      •
      MIT License
      •19•27•4•2•Updated Apr 21, 2026Apr 21, 2026

    • tester-utils

      Public
      Go
      •
      MIT License
      •6•5•0•0•Updated Apr 14, 2026Apr 14, 2026

    • kafka-tester

      Public
      Tester for the kafka challenge.
      Go
      •
      MIT License
      •4•5•0•0•Updated Mar 31, 2026Mar 31, 2026

    • binspec

      Public
      TypeScript
      •7•60•5•1•Updated Mar 9, 2026Mar 9, 2026

    • docs

      Public
      Documentation for codecrafters users and contributors
      Ruby
      •26•26•2•0•Updated Feb 27, 2026Feb 27, 2026

    • claude-code-tester

      Public
      Tester for the claude-code challenge.
      Go
      •1•2•0•0•Updated Feb 23, 2026Feb 23, 2026
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