Idiomatic, memory-safe Ruby bindings for Box2D v3

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

Ruby bindings for HarfBuzz text shaping engine

象算木之法，以字畫示整數加減之程

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

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

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

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

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

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

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

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

Ruby FFI bindings for libusb 1.0.

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

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

Functional, command-oriented OpenGL for Ruby.

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。

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

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

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

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

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

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

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

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

Generate beautiful terminal screenshots from YAML.

A RuboCop Extension Template.

Ruby bindings for the Skia 2D graphics library.

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

Building audio-reactive visuals with a Ruby DSL.

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

A slim file to minify embedded code.

Ruby bindings for the Assimp 5.x asset import library

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

Battery-included monitoring and alerting for Sidekiq

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

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

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

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

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

Headless terminal emulator library for Ruby.

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

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

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.

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.

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

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.

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

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

A minimal LLM implemented in pure Ruby

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.

Web Bluetooth API-style BLE interface for Ruby.

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.

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

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

Detect ignored ActiveRecord rollbacks in joined nested transactions

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

Fast JSON Schema validator for Ruby.

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

A fast, Prism-native Ruby linter

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

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

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

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

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

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

A WebUSB-style API to Ruby applications.

A Ruby FFI binding for PortAudio v19.

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

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

A Pure Ruby Markdown linter and formatter.

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

Hybrid dead-code detection for Ruby projects.

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

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

Simple YAML Frontmatter Parser

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

A custom cop collection of working toolkits.

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

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

RuboCop runner for Ruby code embedded in Slim.