A GIF image that prints itself when run as a Piet program

A fast TOML parser gem fully compliant with TOML v1.0.0 and v1.1.0

An uroboros program with 100+ programming languages

"git bisect" ruby without compilation trouble

A formula that become itself when plotted

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

Helper methods for the Coverage library

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

material for Cookpad's Hackarade #4

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

ikamusume invades Ruby

concov helps you comprehend continuous changes of coverage.

simpletrace reduces backtrace by removing path of installed libraries.

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

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

A NES emulator written in Ruby

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

A docker build machine for each commit of ruby trunk branch

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

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

『Ruby で学ぶ Ruby』用補助ライブラリ

A self-descriptive column object

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

piet-related programs

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

grass-related programs

A chat bot to publicly run Ruby in slack

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

「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

doublehelix obfuscates Ruby codes in Double-helix style

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

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

`/dev/dsp` emulator for os x

Scala-like case classes for Ruby

Expat (XML Parser Toolkit) Module for Ruby 1.9

an implementation of dynamic-wind for ruby's continuation

ThreadFiber is an implementation of fiber using threads.