Companion Rails application for "Modular Rails: Architecture for the Long Game" — a modular monolith demonstrating engine isolation, event-driven communication, and concern-based integration.

Build a Modular Engines Application with Rails 6, Rails 5. You can try it at https://railssamuraicrm.herokuapp.com

Modular Rails The Complete Guide to Modular Rails Applications - Thibault Denizet

A CLI framework that generates modular Rails engines.

This is a deliberately overengineered example of a Rails app to demonstrate some modularity practices

Modular Rails example Todo application