CodeCrafters

Top repositories by stars

• codecrafters-io/build-your-own-x(on leaderboard)

  Master programming by recreating your favorite technologies from scratch.

  Markdown466,860
• codecrafters-io/learning-stipends

  Companies that support engineers with learning stipends

  373
• codecrafters-io/build-your-own-redis

  Definition for the redis challenge.

  Shell294
• codecrafters-io/languages

  Powers multi-language support for CodeCrafters challenges

  Ruby271
• codecrafters-io/build-your-own-git

  Definition for the git challenge.

  Shell130
• codecrafters-io/build-your-own-sqlite

  Definition for the sqlite challenge.

  Shell123
• codecrafters-io/build-your-own-http-server

  Definition for the http-server challenge.

  Shell114
• codecrafters-io/frontend

  Rebuild complex systems from scratch

  TypeScript109
• codecrafters-io/course-sdk

  A rewrite of course-sdk, with better developer ergonomics

  TypeScript79
• codecrafters-io/build-your-own-bittorrent

  Definition for the bittorrent challenge.

  C++79
• codecrafters-io/binspec

  TypeScript58
• codecrafters-io/build-your-own-interpreter

  Definition for the interpreter challenge.

  Shell49
• codecrafters-io/build-your-own-kafka

  Definition for the kafka challenge.

  Shell38
• codecrafters-io/build-your-own-shell

  Definition for the shell challenge.

  Shell36
• codecrafters-io/build-your-own-docker

  Definition for the docker challenge.

  Dockerfile36
• codecrafters-io/redis-tester

  Go27
• codecrafters-io/build-your-own-grep

  Definition for the grep challenge.

  Shell24
• codecrafters-io/build-your-own-dns-server

  Definition for the dns-server challenge.

  Shell20
• codecrafters-io/cli

  CodeCrafters CLI to run tests

  Go19
• codecrafters-io/docs

  Documentation for codecrafters users and contributors

  Ruby19
• codecrafters-io/language-dashboard

  Language dashboard for CodeCrafters challenges.

  Python14
• codecrafters-io/sqlite-starter-rust

  Rust14
• codecrafters-io/docker-explorer

  A test program to help with the Docker challenge

  Go14
• codecrafters-io/redis-starter-go

  Golang starter for the 'Build Your Own Redis' challenge

  Go13
• codecrafters-io/http-server-tester

  Go12
• codecrafters-io/redis-starter-python

  Python starter for the 'Build Your Own Redis' challenge

  Python12
• codecrafters-io/legacy-course-sdk

  Shared code to test course definitions

  Ruby10
• codecrafters-io/sqlite-tester

  Go9
• codecrafters-io/git-tester

  Go9
• codecrafters-io/sqlite-starter-go

  Go starter code for "Build your own SQLite"

  Go8
• codecrafters-io/redis-starter-rust

  Rust8
• codecrafters-io/git-starter-rust

  Starter repo for the Build your own Git challenge

  Rust8
• codecrafters-io/shell-tester

  Tester for the shell challenge.

  Go7
• codecrafters-io/sqlite-starter-python

  Python starter code for "Build your own SQLite"

  Python7
• codecrafters-io/docker-tester

  Go7
• codecrafters-io/docker-starter-c

  C starter for the 'Build your own Docker' challenge

  C7
• codecrafters-io/ansi101

  ANSI Escape Sequence Visualizer

  TypeScript6
• codecrafters-io/ccbench

  A benchmark for coding agents

  Rust6
• codecrafters-io/dns-server-tester

  Tester for the dns-server challenge.

  Go6
• codecrafters-io/bittorrent-tester

  Tester for the "Build your own BitTorrent" challenge

  Go6
• codecrafters-io/docker-starter-rust

  Rust6
• codecrafters-io/build-your-own-claude-code

  Definition for the claude-code challenge.

  Shell5
• codecrafters-io/redis-geocoding-algorithm

  An explainer on how Redis's geocoding algorithm works

  C#5
• codecrafters-io/build-your-own-gleam-chess-bot-js

  Definition for the gleam-chess-bot-js challenge.

  TypeScript5
• codecrafters-io/language-templates

  Dockerfile5
• codecrafters-io/interpreter-tester

  Tester for the interpreter challenge.

  Go5
• codecrafters-io/course-template

  Template for new course repositories

  Shell5
• codecrafters-io/code-walkthroughs

  Source code for CodeCrafters Code Walkthroughs

  5
• codecrafters-io/sqlite-starter-csharp

  C#5
• codecrafters-io/oci-image-executor

  Executes an OCI image using firecracker.

  Go5
• codecrafters-io/redis-starter-java

  Java5
• codecrafters-io/build-your-own-gleam-chess-bot

  Definition for the gleam-chess-bot challenge.

  TypeScript4
• codecrafters-io/kafka-tester

  Tester for the kafka challenge.

  Go4
• codecrafters-io/coderbot-legacy

  Ruby4
• codecrafters-io/http-server-starter-python

  Python4
• codecrafters-io/http-server-starter-go

  Go4
• codecrafters-io/docker-starter-swift

  Swift4
• codecrafters-io/redis-starter-csharp

  C#4
• codecrafters-io/sample-sqlite-databases

  Sample databases for the "Build your own SQLite" challenge

  4
• codecrafters-io/redis-starter-haskell

  Haskell starter code for the "Build your own Redis" challenge

  Haskell4
• codecrafters-io/logstream

  Stream logs to/from Redis using Redis Streams

  Go4
• codecrafters-io/active_prompt

  ActivePrompt is a library to manage LLM prompts

  Ruby3
• codecrafters-io/coderbot-poc

  A fully autonomous agent that can solve a CodeCrafters challenge

  Ruby3
• codecrafters-io/http-server-starter-rust

  Rust3
• codecrafters-io/sqlite-starter-swift

  Swift3
• codecrafters-io/docker-starter-python

  Python3
• codecrafters-io/fly-api-proxy

  Deploy this inside your Fly organization to access the Fly machines API without setting up WireGuard.

  Makefile3
• codecrafters-io/instant-pull-request-action

  Create Pull Requests automatically when a branch is pushed to

  TypeScript3
• codecrafters-io/react-starter-javascript

  JavaScript3
• codecrafters-io/redis-starter-clojure

  Clojure3
• codecrafters-io/docker-starter-php

  PHP3
• codecrafters-io/git-starter-ruby

  Ruby3
• codecrafters-io/environment-python

  3
• codecrafters-io/test-runner-builder

  Ruby2
• codecrafters-io/build-your-own-course-slug-1

  Definition for the course-slug-1 challenge.

  Go2
• codecrafters-io/flyio-disk-performance-test

  Go2
• codecrafters-io/ember-codemirror

  2
• codecrafters-io/build-your-own-dummy

  Definition for the dummy challenge.

  Shell2
• codecrafters-io/bittorrent-test-seeder

  HCL2
• codecrafters-io/torrentcli

  2
• codecrafters-io/redis-starter-cpp

  C++2
• codecrafters-io/grep-starter-go

  Go2
• codecrafters-io/grep-starter-rust

  Rust2
• codecrafters-io/grep-tester

  Go2
• codecrafters-io/heroku-buildpack-dbmate

  A heroku buildpack to install dbmate (a command line tool to manage DB migrations)

  Shell2
• codecrafters-io/heroku-buildpack-gh

  A heroku buildpack to install gh (GitHub's official command line tool)

  Shell2
• codecrafters-io/builder

  Builds images for execution on CodeCrafters.

  2
• codecrafters-io/tester-utils

  Go2
• codecrafters-io/git-starter-go

  Go2
• codecrafters-io/redis-starter-ruby

  Ruby starter for the 'Build Your Own Redis' challenge

  Ruby2
• codecrafters-io/git-starter-python

  Starter repo for the Build your own Git challenge

  Python2
• codecrafters-io/docker-starter-go

  Golang starter for the 'Build Your Own Docker' challenge

  Go2
• codecrafters-io/redis-starter-swift

  Swift2
• codecrafters-io/stagegen

  TypeScript1
• codecrafters-io/coderbot

  Coding agent used on CodeCrafters challenges

  Dockerfile1
• codecrafters-io/git-host-proxy

  Reverse proxy to git.codecrafters.io

  Dockerfile1
• codecrafters-io/llm-rules-test

  Custom runner for LLM rules that help validate stage instructions

  TypeScript1
• codecrafters-io/code-example-previews-stg

  Shell1
• codecrafters-io/gleam-chess-bot-js-tester

  Tester for the gleam-chess-bot-js challenge.

  Go1
• codecrafters-io/gleam-chess-bot-tester

  Tester for the gleam-chess-bot challenge.

  Go1