Create a binary pixel map

POML is a Ruby gem that implements POML (Prompt Oriented Markup Language), a markup language for structured prompt engineering. This is a Ruby port of the original Microsoft POML library, providing comprehensive tools for creating, processing, and rendering structured prompts with support for multiple output formats including OpenAI Chat, LangChain, and Pydantic.

PostnHost is a mountable Rails CMS engine with structured data, multilingual publishing, version history, and a rich-text editor.

Automate screenshots from web apps for your documentation, landings pages and emails

RailsDen is a full-featured Rails-native community platform from Oak Harbor Ventures, LLC. Distributed as one gem, RailsDen can run as a standalone community application or mount inside an existing Rails application, with forums, Classic and 3D Chat, moderation, private messaging, engagement, advertising and sponsorships, and plugin and theme support.

A CLI tool that applies Markdown-written presentations to Google Slides, enabling continuous deck creation with content and design separation.

RivetCms is a headless CMS Rails engine, similar to Strapi, that provides content management functionality for Rails applications.

Using LibVips to process images, Social::Images generates images for use on social media accounts using a simple API.

tempest is a REPL-style terminal client for Bluesky built on AT Protocol and Ruby 4.0.

Save and compare screenshots of the functionality of other applications you want to copy end to end: compares a verified oracle tree against a current tree (structure check first, then per-file similarity through adapters — html by structure, txt by lines, png by pixels, binaries by bytes). Any unknown file is a failure.

Media Library is a mountable Rails engine that lists images stored in Active Storage (S3, Google Cloud Storage, Disk — whatever the host app configures) and gives content editors a modal image picker. Drop `media_picker_field` next to any URL field (such as an og:image field) so editors can select an existing image or upload a new one instead of typing a path. Storage-agnostic, namespaced, and publishable.

Process your images with ruby-vips using an operation-oriented approach.

Image tags that conform with web vitals

Vivlio Starter の Enhanced Mode を提供する拡張プラグインです。HexaPDF で PDF にしおりを付け、PDF を Markdown へ変換します。スキャンした PDF は Tesseract で OCR し、画像は WebP で抽出します。ライセンスは AGPL-3.0 です。