IronAdmin is a convention-over-configuration admin panel engine for Ruby on Rails that automatically generates CRUD interfaces from your models with built-in support for search, filters, scopes, custom actions, theming, and policy-based authorization.

A Rails engine for managing and publishing content with a flexible schema.

Janela lets you define dashboards directly on your ActiveRecord models and associations. Slicers, cross-filtering charts, and dimension drill-down as first-class Rails citizens, not a bolted-on admin panel. Built on Ruby and Stimulus so it drops onto any Rails application with no separate frontend build step. Dashboards can run live and interactive for internal analysts, or be published as locked, static views for external audiences, from the same underlying definition.

Jav is a very custom Content Management System for Ruby on Rails that saves development time by building user interfaces and logic using configuration rather than traditional coding; When configuration is not enough, you can fallback to familiar Ruby on Rails code.

Jigsaw Engine

Jquard is a mountable Rails engine for building modern admin panels with a chainable resource DSL inspired by Filament (PHP). It generates Filament-style index, create and edit pages from your models, built on Rails defaults: Hotwire, Propshaft and precompiled Tailwind CSS.

JSAdmin exposes Active Record models through a generic CRUD UI built with Tailwind CSS and Hotwire.

Modal library that uses Turbo and Stimulus.

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.

A convention-over-configuration CRUD engine for Rails 8+, built on the layered-ui-rails gem. Declare a resource class, mount it in routes.rb, and get index, new/create, edit/update, and destroy actions with clean default views, Ransack-powered search and sorting, and Pagy pagination. Override any controller or view when you need full control - generators are included to help you create custom controllers and views.

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).

Lazy load values in Rails views.

Low-code platform for building information systems: write the metadata (models, UI presenters, permissions, and more) in YAML or DSL, and the Rails mountable engine builds the app for you.

An implementation of the circuit breaker pattern using ActiveRecord

Lookout is a fork of Ahoy Captain with SQLite support, continued maintenance, and modern Rails 8 compatibility. Full-featured analytics dashboard with conversion funnels, goals tracking, and beautiful visualizations.

A Ruby gem that provides tooling for connecting to and inspecting MCP servers, allowing you to list and execute tools, resources, and prompts with JSON output.

Fast and awesome tables, with pagination, sorting, filtering and custom views.

A quick and easy way to implement an instant-messaging module using Turbo Rails.

Rails Engine providing private and public messaging for any object, such as Users or Groups

MetaWorkflows provides a flexible framework for creating and executing AI-powered workflows with human interaction points, built as a Rails engine for easy integration into existing applications.