A Ruby toolkit for building small scores with a Ruby DSL and exporting them to PDF, SVG, or MIDI.

Ruby audio feature extraction library with WAV analysis and optional FFTW acceleration.

Functional, command-oriented OpenGL for Ruby.

Parses Terraform (.tf) files and generates infrastructure design documentation in Markdown format.

Ruby wrapper for Linux `ptrace(2)` focused on building tracers and debugger-like tooling with a Ruby-friendly API.

WebRTC bindings for Ruby, providing real-time audio, video, and data channel capabilities.

A modern static site generator for Ruby with Vite/Tailwind integration.

A linter and formatter for Lrama-style BNF grammar files.

Ruby bindings for HarfBuzz text shaping engine

lxdb (LLeXtreme DeBugger) is a powerful, pwndbg-style debugger for Ruby built on top of lldb-ruby.

A Ruby audio synthesis library with a flexible node graph, oscillator and synth variants, effects, transport/event scheduling, sample playback, analysis utilities, offline rendering, and an optional PortAudio-backed realtime context.

A Ruby CLI for linting and formatting YAML files

A minimal LLM implemented in pure Ruby

Interactive Bezier curve drawing tool using Ruby2D.

A small 2D game engine for PicoRuby and CRuby-based POSIX development.

Web Bluetooth API-style BLE interface for Ruby.

Visualizer for checking B-tree behavior.

Ruby Like Shading Language - A Ruby DSL for writing shaders that transpile to multiple GPU shader languages.

🎮 A game in which you enter the name of the class and compete for the number of letters on rurima's page.

A custom cop collection of working toolkits.

Ruby bindings for the Skia 2D graphics library.

Generate beautiful terminal screenshots from YAML.

Generate Mermaid diagrams from Rails models and controllers.

A tool to create mermaid class diagrams from Ruby code.

A programming language compiler using "Grongi language," the language of the Gurongi tribe from Kamen Rider Kuuga (Masked Rider Kuuga).

A hobby regex engine written in Ruby. Designed to be simple and efficient for educational purposes.

🛤️ A tiny Ruby+SVG library for drawing railroad syntax diagrams like JSON.org.

Pure Ruby packet analyzer.

Ruby FFI bindings for the core JACK Audio Connection Kit client APIs.

Pure Ruby FFI bindings for GLFW 3.3/3.4.

Ruby FFI bindings for RtMidi with Ruby-idiomatic MIDI input/output, typed messages, and low-level C API access.

Ruby FFI bindings for libvorbis and libvorbisenc. Provides Vorbis audio codec encoding functionality.

Replay test suite's HTTP interactions as WebMock stubs in RSpec.

Convert ASCII/Unicode diagrams into clean SVG and PNG images

Building audio-reactive visuals with a Ruby DSL.

rspec-rewind is a modern retry orchestration gem for RSpec.

Educational compiler backend targeting C through printf %n, with Brainfuck and conservative LLVM IR subset frontends.

A tiny Ruby JIT compiler for learning how bytecode VMs, interpreters, and x86-64 native code generation work.

A WebUSB-style API to Ruby applications.

Convert PlantUML to Mermaid

A Ruby gem for converting SVG files to PNG images. Can be used as both a CLI tool and a Ruby library.

A Pure Ruby Markdown linter and formatter.

Regression testing for Ruby APIs, files, and data snapshots. Compare outputs across environments with tolerances and ignore rules.

Licensure is a RubyGem CLI tool that inspects dependency licenses from `Gemfile.lock` and checks them against a configurable allow list.

Rdeck is a Ruby CLI tool that converts Markdown presentations to Google Slides, enabling continuous deck creation with content and design separation.

Lens of Truth to check if the automatic modification by RuboCop is not causing changes in the AST.

Simple YAML Frontmatter Parser

Obituary detects archived GitHub repositories for your RubyGem dependencies.

A pure Ruby audio processing gem focused on ergonomic APIs and immutable audio transforms.

A RuboCop Extension Template.

A pure Ruby library for visualizing automata and state machines. Supports multiple output formats including Mermaid, GraphViz DOT, PlantUML, and interactive HTML.

A multiplayer Tetris game written in Ruby that runs over Telnet. Play classic Tetris against another player in real-time through your terminal.

A tiny Ruby library for generating finite state machine (automaton) diagrams as SVG.

A RuboCop extension focused on enforcing Sidekiq best practices and coding conventions.

Parselly is a module providing a simple way to parse and extract data from a css selector 🌿

A cli that highlights gems you can likely remove from a Ruby project's Gemfile.

A slim file to minify embedded code.

A Ruby FFI binding for PortAudio v19.

Ruby FFI bindings for FFTW3 (Fastest Fourier Transform in the West).

A Ruby audio feature extraction library that provides a full pipeline from audio loading to spectral analysis, feature extraction, rhythm analysis, effects, and lightweight visualization.

Ruby FFI bindings for libogg, the OGG container format library.

Bevy bindings for Ruby, providing ECS-driven game/app architecture, 2D rendering sync, input bridging, and runtime interaction events.

Advisory locking for ActiveRecord with modern Rails conventions.

Language Server Protocol (LSP) implementation for Lrama Style BNF grammar files (.y files).

A Ruby live coding toolkit for composing musical patterns with rational time and OSC/MIDI output.

Headless terminal emulator library for Ruby.

RuBy Graphics Library - A pure Ruby graphics library with software rendering engine and cross-platform GUI support.

Ruby FFI bindings for libusb 1.0.

Pure Ruby fast lexer generator.

A sandbox where you can casually try out capybara.

WebXR Device API bindings for Ruby. Build VR/AR applications in Ruby using ruby.wasm.

Bring harmony to your pull requests.

A RuboCop extension focused on enforcing RSpec. A place where no one is officially employed, but where useful cops can gather.

Generate Markdown documentation from OpenAPI specifications.

A pure Ruby library for building, reading, and writing Standard MIDI Files (SMF)

A pure Ruby LALR(1) parser generator. You define a grammar with a Ruby DSL, and Rusa generates a standalone Ruby parser with no runtime gem dependency.

Ruby FFI bindings for SDL3 (Simple DirectMedia Layer 3).

Convert Mermaid diagrams to SVG files using Puppeteer. Supports both CLI and programmatic usage with batch conversion capabilities.

A RuboCop extension focused on enforcing committee.

Ruby bindings for WebGPU via wgpu-native.

Ruby bindings for the LLDB debugger.

A Ruby gem for visualizing the cascade deletion impact in Rails applications. BlastRadius helps you understand which records will be deleted when you delete a record, based on ActiveRecord associations with dependent options.

A Ruby gem to sync Markdown files to Notion pages.

A visual editor for Lrama grammar files (.y files) powered by Ruby Wasm.

Auto-fix N+1 queries detected by Bullet at runtime.

Sample code for RubyConf Taiwan x COSCUP 2025 "Joy with 3D Graphics Using Ruby"

🟦 Bluish color scheme for irb

RuboCop runner for Ruby code embedded in Slim.