Track legacy code usage, aggregate removal signals, and review everything in a mounted Rails engine dashboard.

A Rails Engine for collaborative plan review with AI-powered feedback.

A mountable Rails engine that provides a full-featured web interface for documenting database schemas — tables, columns, relationships, constraints, change tracking, ER diagrams, Excel export, and i18n support (EN/JA).

DBViewer is a mountable Rails engine that provides a simple interface to view database tables and their records.

Deadfire - lightweight css preprocessor

Provides components and controllers for building real-time video chat features in Rails applications using WebRTC, Action Cable, Turbo Streams, and Stimulus.

A Solid Queue dashboard for Active Job

font-awesome-propshaft provides the Font-Awesome web fonts and stylesheets as a Rails engine for use with the asset pipeline.

Goodmin is an admin framework for Rails 8+. Use it to build dedicated admin sections for your apps, or stand alone admin apps such as internal tools.

Hephaestus is a Rails generator to create plugs for Yetto.

Jigsaw Engine

An open source Rails 8+ engine built on `layered-ui-rails` that provides a multi-provider AI assistant with streaming responses and a full conversation UI.

An open source Rails 8+ engine built on Tailwind CSS, providing customisable WCAG 2.2 AA compliant design tokens, utility classes, and Stimulus controllers for theme switching, mobile navigation, slide-out panels, modals, and tabs. Integrates with the gems you already use (Devise, Pagy, Ransack).

Mission Control dashboard for monitoring and managing SolidCache

A gem that extracts the styling and theming components from my Rails applications for reuse across multiple projects

Mountable Rails engine for SQL charts, dashboards, and analytics.

Better websites on Rails.

Authentication, admin UI components, navigation, tags, imports, and extension hooks for Rails apps built on the Panda ecosystem

PhlexKit brings the shadcn/ui component catalog to Phlex and Rails, replacing Tailwind with co-located vanilla CSS per component plus a global :root design-token theme. phlex-reactive is an optional, per-component integration — never a required dependency. Assets ship precompiled-static, so no host build step.

A lightweight Rails engine for managing entity-based feature flags with built-in caching support. Pin features to any ActiveRecord model with polymorphic associations, providing a flexible alternative to traditional feature flags. Includes a configurable cache expiry, and isolated namespace to avoid conflicts.