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

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

Building audio-reactive visuals with a Ruby DSL.

Ruby bindings for WebGPU via wgpu-native.

Ruby bindings for the Skia 2D graphics library.

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

A RuboCop Extension Template.

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

Pure Ruby bindings for Linux seccomp user notifications

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

Web Bluetooth API-style BLE interface for Ruby.

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

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

Capture legacy Ruby behavior, synthesize portable specifications, and verify replacement implementations with replay and bounded formal checks.

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

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

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

Battery-included monitoring and alerting for Sidekiq

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

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

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.

Pure Ruby interface to Linux Pressure Stall Information (PSI)

A Prism-based codemod for safely migrating deprecated graphql-ruby APIs without booting the application.

Share FactoryBot data safely across RSpec examples

A slim file to minify embedded code.

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

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

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

Generate Mermaid diagrams from Rails models and controllers.

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

Check GraphQL-Ruby resolver contracts against Prism-parsed Ruby source before runtime.

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

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.

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

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.

Native CRuby bindings for libseccomp with low-level and Ruby-friendly APIs.

Ruby bindings for Linux fanotify

A small Mackerel metrics client for PicoRuby that validates service or host metric batches before a single verified HTTPS POST.

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

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

Observe file, network, and process capabilities used while installing or requiring Ruby gems.

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

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

Ruby bindings for HarfBuzz text shaping engine

Pure Ruby JPEG XL decoder and lossless Modular encoder with no native extensions.

OpenTelemetry browser and SSR adapters for Funicular, with OTLP and W3C Trace Context support.

RuboCop runner for Ruby code embedded in Slim.

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

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

Generate beautiful terminal screenshots from YAML.

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

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.

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

Simple YAML Frontmatter Parser

Hybrid dead-code detection for Ruby projects.

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.

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

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

A modern, dependency-free Ruby client for the Notion API

Ruby bindings for Linux's file-descriptor-based mount API

Report and block unintended syscalls in Ruby builds and tests

Detect ignored ActiveRecord rollbacks in joined nested transactions

A Pure Ruby Markdown linter and formatter.

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

Deterministic syscall fault injection for Ruby programs using Linux seccomp user notifications.

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

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

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

A practical Perl 5 interpreter written in pure Ruby

Bounded, browser-local profiler for Funicular and PicoRuby development tooling.