Yusuke Endoh

An uroboros program with 100+ programming languages

Quine Relay is a programming art project: a chain of 128 programs cycling through 128 different languages where each program outputs the next language's source code, eventually regenerating the original Ruby file.

A NES emulator written in Ruby

A robust quine program that works even after any one character is deleted.

A bridge from WSL2 ssh client to Windows ssh-agent.exe service

A "nankai" program used in a Japanese anime television series "Sonny Boy"

Which programming language is best for AI coding agents? Benchmarking 13 languages with Claude Code.

_ allows you to write Ruby script by using only _.

This Minesweeper AI does the brain-testing part for you. You do the luck-testing part.

doublehelix obfuscates Ruby codes in Double-helix style

An addon for xterm.js to add a PTY layer

No description.

A perfect player for Dobutsu-Shogi

A fast TOML parser gem fully compliant with TOML v1.0.0

「あなたの知らない超絶技巧プログラミングの世界」全ソースコード

6x6-reversi oracle is a "perfect" player for reversi using 6x6 board

A self-reproducing program that shapes the station names of Yamanote Line

A Docker image that prints Dockerfile that generated the image iself

emscripten'ed MRI

『Ruby で学ぶ Ruby』用補助ライブラリ

experimental build of irb on ruby-wasm-emscripten and xterm-pty

A self-descriptive column object

A Quine that works with all release versions of CRuby, from Ruby 0.49 to Ruby 3.2.1

A JavaScript Quine written in the JSFuck style

A formula that become itself when plotted

1234567890 allows you to write Ruby script by using only numbers.

A source code mirror of [rbtree gem](https://rubygems.org/gems/rbtree). This repository is for making it easy for me (@mame) to maintain the rbtree gem. We will not accept any feature proposal. The primary repository of rbtree gem is private, and managed by OZAWA Takuma, the original author of the gem.

material for Cookpad's Hackarade #4

ruby binding for MiniSat, which is an open-source SAT solver

A faster substitute for `lib/prime.rb`.

No description.

Helper methods for the Coverage library

A "Cellular" Viewer for Conwey's Game of Life

concov helps you comprehend continuous changes of coverage.

A HTML page that prints its source code in its favicon

A lightweight library featuring parsers for multiple minimal subsets of TypeScript, designed for learning and experimenting with type systems

A puzzle to stamp letters and send them to the mailbox

"git bisect" ruby without compilation trouble

RubyConf 2017 Credit Quine https://www.youtube.com/watch?v=ABuj0XfltpM

rirb (remote irb) allows you to attach a running ruby process and to observe/modify global states via an irb prompt.

A Quine of Next.js app https://nextjs-quine.vercel.app/

enumerabler enhances Enumerable with methods returning enumerator.

IOCCC日本語ネタバレ解説のソースコード

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A Small C Compiler

ikamusume invades Ruby

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A simple Ruby wrapper for the Slack's Socket Mode API

an implementation of dynamic-wind for ruby's continuation

A linux kernel module that provides /proc/quine/quine.c which is a copy of its own source code

`/dev/dsp` emulator for os x

simpletrace reduces backtrace by removing path of installed libraries.

Esoteric programming language where all you've got is a deck of cards

A chat bot to publicly run Ruby in slack

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piet-related programs

Scala-like case classes for Ruby

grass-related programs

prettytrace detects and omits repetition of backtrace, which makes backtrace shorter and smarter.

A docker build machine for each commit of ruby trunk branch

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A type-level Quine in Haskell

ThreadFiber is an implementation of fiber using threads.

Winners of the International Obfuscated C Code Contest

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rational approximation table of percentages

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image retrieval for national flags

Modern concurrency tools including agents, futures, promises, thread pools, supervisors, and more. Inspired by Erlang, Clojure, Scala, Go, Java, JavaScript, and classic concurrency patterns.

No description.

inline-ook allows you to embed Ook! program in Ruby script

Expat (XML Parser Toolkit) Module for Ruby 1.9

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A docker image for compiling ruby

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Net::HTTP provides a rich library which can be used to build HTTP user-agents.

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Regexp based customizable linter

Set up a full text code search engine for rubygems mirror

EsoLangVM Compiler Infrastructure

Repository of Japanese Ruby reference manual

Generate difference sets between Ruby sequences.

The gem that has been saving people from typos since 2014

No description.

Continuous Integration tool, mainly for Ruby

Manage your Ruby application's gem dependencies

Run systemd in WSL2

Android terminal and Linux environment - app repository.

A minimal environment for testing a tarball of ruby

The new standard of SIXEL development

Lightweight Ruby

A simple wrapper of `gettimeofday(2)` for mruby

Where should Greenwich have been?

The `gem mirror` RubyGems command, creates local mirrors of all gems from a remote gem source.

言語学オリンピック 過去問攻略集

日本言語学オリンピックの公式サイト

Language agnostic test suite for TOML parsers

Library packaging and distribution for Ruby.

Debugging functionality for Ruby

No description.

IRB on browser powered by WebAssembly

VSCode public API plugged on the monaco editor

Provides lexical scanning operations on a String.

URI is a module providing classes to handle Uniform Resource Identifiers

Next generation frontend tooling. It's fast!

JSON implementation for Ruby

OmniAuth is a flexible authentication system utilizing Rack middleware.

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Arbitrary-precision decimal floating-point number library for Ruby

test-unit

Distributed object system for Ruby

Prism Ruby parser

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Interface for secure random number generator

Classy web-development dressed in a DSL (official / canonical repo)

Universal Ruby library to handle WebSocket protocol

Emscripten: An LLVM-to-WebAssembly Compiler

No description.

Searching for unexpected `end` syntax errors takes a lot of time. Let this gem do it for you!

Manage your app's Ruby environment

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The Ruby Programming Language

The Python programming language

OSS-Fuzz - continuous fuzzing for open source software.

No description.

ruby.wasm is a collection of WebAssembly ports of the CRuby.

Several file utility methods for copying, moving, removing, etc.

A modular Ruby web server interface.

Japanese translation of the PHP documentation

An experimental type-level Ruby interpreter for testing and understanding Ruby code

CRuby Dev Builds for GitHub Actions

No description.

A collection of RBS for gems.

minitest provides a complete suite of testing facilities supporting TDD, BDD, mocking, and benchmarking.

A simple PEG library for ruby

A libyaml wrapper for Ruby

A ruby client library for Netbox v2.

A Ruby static code analyzer, based on the community Ruby style guide.

:page_with_curl: Create customizable MiniTest output formats.

RSpec's 'test double' framework, with support for stubbing and mocking

Type check JSON objects

Code coverage for Ruby with a powerful configuration library and automatic merging of coverage across test suites

Benchmark runner for ruby-sky2 server

A framework for collecting and aggregating prometheus metrics

Language Savant. If your repository's language is being reported incorrectly, send us a pull request!

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Cookpad's coding style guides

Manifest for rubyci, gem-codesearch and etc

This library provides functionality to send internet mail via SMTP, the Simple Mail Transfer Protocol.

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add console capabilities to IO instance

interactive Ruby

The compatible library with the API of Ruby's stdlib 'readline'

your personal string matching expert

Racc is an LALR(1) parser generator. It is written in Ruby itself, and generates ruby programs.

HTTP server toolkit

a sampling call-stack profiler for ruby 2.1+

Ruby on Rails

Canonical source repository for LibYAML

The Ruby community's gem hosting service.

Type signature for Ruby classes

RDoc produces HTML and online documentation for Ruby projects. RDoc includes the rdoc and ri tools for generating and displaying online documentation.

Types, type checking, and contracts for Ruby

Provides SSL, TLS and general purpose cryptography.

The Ruby CI for chkbuild

Source of the https://www.ruby-lang.org website.

Git hooks for ruby/ruby repository

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Backward compatible implementation of String#crypt

Library for stubbing and setting expectations on HTTP requests in Ruby.

Ruby gem for search District Code(全国地方公共団体コード, JIS X 0402) of Japan.

mruby by mruby

Gradual Typing for Ruby

A Ruby parser.

No description.

A template engine for Rails, focusing on speed, using Ruby's String interpolation syntax

A list of all GEMs for mruby to be managed by mgem

experimental implementation for Method and UnboundMethod class

Distributed RSpec

The presentations of Cookpad staffs

The Rust website

Dockerfile for mattermost in production

PyStan, the Python interface to Stan

Scipy library main repository

Tokyo RubyKaigi 11

A make-like build utility for Ruby.

Lazy K interpreter

The Ruby Spec Suite

Ruby to JavaScript compiler

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Quine Advent Calendar 2014

RubyKaigi 2013