A command-line tool to generate, analyze, convert and manipulate colors

A Ruby gem to sync Markdown files to Notion pages.

deck is a tool for creating deck using Markdown and Google Slides.

Generate Markdown documentation from OpenAPI specifications.

A Ruby gem implementation of a Model Context Protocol (MCP) server for Rails projects. This server allows LLMs (Large Language Models) to interact with Rails projects through the Model Context Prot…

日本語文章の解析・校正を行う LSP サーバー。

Kanban as it should be. Not as it has been.

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

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

Type check JSON objects

Simple, but flexible HTTP client library, with support for multiple backends.

build-once run-anywhere c library

A ruby implementation of the RFC 7519 OAuth JSON Web Token (JWT) standard.

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

a converter from Markdown into Re:VIEW, using redcarpet

A Chrome extension that copies the page title and URL to your clipboard in `[Title URL]` format.

Container runtimes on macOS (and Linux) with minimal setup

ASTro: AST-based Reusable Optimization framework

Racc for Visual Studio Code is a powerful extension that provides comprehensive support for the Racc parser generator.

Ruby FFI bindings for llama.cpp to run open-source LLMs such as GPT-OSS, Qwen 3, Gemma 3, and Llama 3 locally with Ruby.

GitHub Copilot CLI brings the power of Copilot coding agent directly to your terminal.

A port of the Berkeley YACC parser-generator to Rust

Koebiten is a 2D game engine that runs on TinyGo. It’s inspired by Ebitengine and is characterized by its simple API.

Update Dependabot's pull request for bundler with `--conservative` option.

Static analysis for GitHub Actions

コード例で学ぶ Lean 言語