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

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

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

A WebUSB-style API to Ruby applications.

Headless terminal emulator library for Ruby.

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

Lightweight Ruby toolkit for building small music scores, parsing a LilyPond-style syntax subset, and exporting PDF, SVG, or MIDI.

落語調の帳場言葉で書く、小さな算譜言語「噺椎」の Ruby 処理系。

象算木之法，以字畫示整數加減之程

RSpec coverage intent metadata, strict coverage checks, and traceability suggestions.

Detect, record, and classify flaky RSpec failures with normalized signatures, isolated reruns, and CI-friendly reports.

Dependency-free Ruby library for loading and writing glTF 2.0 and GLB with GPU-ready packed accessors.

Japanese seasonal and lunisolar calendar calculations in Ruby: 24 solar terms, 72 microseasons, observances, new moons, and date conversion.

Ruby FFI bindings for FreeType 2.11+, with SDF atlases and HarfBuzz text meshes.

Idiomatic, memory-safe Ruby bindings for Box2D v3

Catch Active Record transactions napping—detect non-database idle gaps while locks may be held.

Detect PostgreSQL and MySQL session-state leaks in Active Record connection pools.

Pure Ruby library and CLI for reading, composing, editing, and writing OpenUSD USDA and USDZ assets.

Ruby JSON processor with a practical jq 1.7.1-compatible subset, CLI, and Ruby API.

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

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

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

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

Generated Ruby bindings for Dear ImGui with an idiomatic API, exception-safe DSL, GLFW/SDL3/OpenGL/WebGPU backends, and ImPlot.

A RuboCop extension focused on enforcing committee.

Evidence-based test suite adequacy analysis for Ruby, combining coverage, mutation testing, checked coverage, redundancy detection, and test-smell heuristics.

Generate Mermaid diagrams from Rails models and controllers.

Ruby bindings for WebGPU via wgpu-native.

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.

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

Pure Ruby FFI bindings for GLFW 3.3/3.4.

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

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

A small Ruby gem for reading large JSON array, NDJSON, and CSV inputs one record at a time

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.

Fast JSON Schema validator for Ruby.

化学式を解剖し、分子の量を秤り、反応式を釣合はすRubyGemに候

Decode PicoRuby/R2P2 Cortex-M HardFault logs with matching ELF debug symbols

Causal profiling toolkit for Ruby that estimates which lines or waits would actually improve throughput or latency.

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

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

Texture-oriented image decoding, conversion, resizing, and GPU upload helpers for Ruby.

Ruby FFI bindings for robust Clipper2 polygon clipping, offsets, and GPU-ready triangulation.

Ruby bindings for the Assimp 5.x asset import library

Detect ignored ActiveRecord rollbacks in joined nested transactions

Battery-included monitoring and alerting for Sidekiq

A Pure Ruby Markdown linter and formatter.

A three.js-like scene graph and WebGPU renderer for Ruby, with PBR, glTF, animation, shadows, and offscreen rendering.

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

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.

Simple YAML Frontmatter Parser

Fast Prism-native AST traversal, declarative matching, and source rewriting for Ruby

Hybrid dead-code detection for Ruby projects.

A custom cop collection of working toolkits.

Pure Ruby LR parser generator with racc-compatible grammars, EBNF extensions, diagnostics, and SLR/LALR/LR(1) backends.

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

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

Building audio-reactive visuals with a Ruby DSL.

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

Functional, command-oriented OpenGL for Ruby.

A Ruby FFI binding for PortAudio v19.

Ruby FFI bindings for libusb 1.0.

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

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

Pure-Ruby MIDI library for messages, ports, SMF I/O, middleware, network MIDI, and MIDI 2.0 UMP.

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.

A terminal slide rule simulator for Ruby, with interactive sandbox, demo, and drill modes.

Runtime risky-test detection for RSpec: reports tests with no expectations or unexpected output.

Detect RSpec examples that leak global state, resources, time travel, randomness, or filesystem changes.

Research-backed safe regression test selection and fast test feedback for Ruby.

A fast, Prism-native Ruby linter

Ruby bindings for RenderDoc's in-application API, with programmatic GPU frame capture and RSpec integration.

Ruby bindings for Jolt Physics, powered by joltc, FFI, and larb

Frame-level Ruby bindings for FFmpeg video and audio encoding/decoding without subprocesses.

Ruby bindings for HarfBuzz text shaping engine

Catch Active Record objects whose database writes rolled back while their in-memory state stayed changed.

Strict JSON5 1.0.0 parser in Pure Ruby with generated grammar, diagnostics, limits, and lossless Document mode.

A differentiable 3D Gaussian splatting renderer and trainer for Ruby, with Numo::NArray and optional OpenMP acceleration.

A minimal LLM implemented in pure Ruby

Web Bluetooth API-style BLE interface for Ruby.

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

Ruby-native lexer generator for parser authors. Write ordinary Ruby specs, run them at runtime, or generate deterministic Ruby for deployment.

Generate beautiful terminal screenshots from YAML.

A RuboCop Extension Template.

Ruby bindings for the Skia 2D graphics library.

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

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.

RuboCop runner for Ruby code embedded in Slim.