Repositories list

• 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

  •6969 forks•316316 stars•00 issues•2020 pull requests•Updated Apr 23, 2026Apr 23, 2026

• shell-tester

  Public

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

  Go

  •55 forks•77 stars•00 issues•55 pull requests•Updated Apr 22, 2026Apr 22, 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

  •1818 forks•4545 stars•00 issues•55 pull requests•Updated Apr 22, 2026Apr 22, 2026

• tester-template

  Public template

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

  •33 forks•11 star•00 issues•00 pull requests•Updated Apr 22, 2026Apr 22, 2026

• dns-server-tester

  Public

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

  Go

  •55 forks•66 stars•00 issues•00 pull requests•Updated Apr 22, 2026Apr 22, 2026

• homebrew-tap

  Public

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

  Ruby

  •

  MIT License

  •11 fork•11 star•00 issues•00 pull requests•Updated Apr 21, 2026Apr 21, 2026

• cli

  Public

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

  Go

  •

  MIT License

  •1616 forks•2323 stars•33 issues•11 pull request•Updated Apr 21, 2026Apr 21, 2026

• frontend

  Public

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

  emberprogramming-challenges

  emberprogramming-challenges

  TypeScript

  •

  Other

  •3030 forks•115115 stars•66 issues•2222 pull requests•Updated Apr 21, 2026Apr 21, 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

  •1414 forks•2121 stars•22 issues•22 pull requests•Updated Apr 20, 2026Apr 20, 2026

• language-dashboard

  Public

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

  Python

  •

  MIT License

  •22 forks•1515 stars•00 issues•00 pull requests•Updated Apr 20, 2026Apr 20, 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

  •1313 forks•2424 stars•00 issues•33 pull requests•Updated Apr 20, 2026Apr 20, 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

  •1919 forks•8282 stars•11 issue•33 pull requests•Updated Apr 20, 2026Apr 20, 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

  •3131 forks•131131 stars•11 issue•22 pull requests•Updated Apr 20, 2026Apr 20, 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

  •2525 forks•133133 stars•44 issues•66 pull requests•Updated Apr 20, 2026Apr 20, 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

  •1616 forks•5555 stars•00 issues•44 pull requests•Updated Apr 20, 2026Apr 20, 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

  •3535 forks•114114 stars•22 issues•11 pull request•Updated Apr 20, 2026Apr 20, 2026

• 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

  •44 forks•1717 stars•00 issues•1818 pull requests•Updated Apr 20, 2026Apr 20, 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

  •1212 forks•4646 stars•00 issues•77 pull requests•Updated Apr 20, 2026Apr 20, 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

  •2424 forks•9191 stars•22 issues•11 pull request•Updated Apr 20, 2026Apr 20, 2026

• language-templates

  Public

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

  •99 forks•55 stars•00 issues•33 pull requests•Updated Apr 20, 2026Apr 20, 2026

• tester-utils

  Public

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

  •

  MIT License

  •55 forks•33 stars•00 issues•00 pull requests•Updated Apr 14, 2026Apr 14, 2026

• redis-tester

  Public

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

  •2020 forks•2828 stars•00 issues•44 pull requests•Updated Apr 13, 2026Apr 13, 2026

• kafka-tester

  Public

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

  Go

  •

  MIT License

  •33 forks•44 stars•00 issues•00 pull requests•Updated Mar 31, 2026Mar 31, 2026

• ccbench

  Public

  codecrafters-io/ccbench’s past year of commit activity
  A benchmark for coding agents

  Rust

  •44 forks•2929 stars•11 issue•00 pull requests•Updated Mar 14, 2026Mar 14, 2026

• binspec

  Public

  codecrafters-io/binspec’s past year of commit activity
  TypeScript

  •66 forks•6060 stars•55 issues•11 pull request•Updated Mar 9, 2026Mar 9, 2026

• docs

  Public

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

  Ruby

  •2222 forks•2121 stars•11 issue•00 pull requests•Updated Feb 27, 2026Feb 27, 2026

• claude-code-tester

  Public

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

  Go

  •00 forks•11 star•00 issues•00 pull requests•Updated Feb 23, 2026Feb 23, 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+ 3

  programmingtutorialsfreeawesome-listtutorial-codetutorial-exercises

  Markdown

  •47k47k forks•493k493k stars•250250 issues•217217 pull requests•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

  •11 fork•22 stars•00 issues•00 pull requests•Updated Feb 19, 2026Feb 19, 2026

• sqlite-tester

  Public

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

  •77 forks•99 stars•00 issues•22 pull requests•Updated Feb 13, 2026Feb 13, 2026