Like Rails Engines, but without the friction. Your Rails app can't access them, and they can't access each other.

Turn ActiveSupport::Notification instruments into DTrace probes. This allows you to trace Rails apps.

Extend Rails Engine's business logic (models, controllers, helpers, etc.) easily from your application or other engine.

This generator will put the graphql files input your app folder

hansontable wrap in gem

OpenTracing instrumentation for Rails.

Provides Rails 5 compatible testing methods for gradual migration from Rails 4 to 5.

Sets the current locale of a request using a combination of params, cookies, and http headers

Lookup tables with ruby-on-rails

A Rails engine that provides a database-backed delivery method for Action Mailer, primarily intended for local development and staging environments. It captures emails sent through your Rails application and provides a web interface to view them.

A comprehensive Rails 8 application generator that sets up a modern stack including Tailwind CSS, DaisyUI, Kamal deployment, monitoring, authentication, S3 backups,and more.

An operations service layer for rails projects.

This gem allows you to use parts in your rails app

This project allows you to monkey patch ActiveRecord (PostgreSQL) and auto-heal applications in production when PostgreSQL database fails over or when a cached column (in ActiveRecord schema cache) is removed from the database from a migration in another process.

MCP interface for rails-pg-extras. It enables LLMs to analyze the PostgreSQL metadata and performance metrics.

This gem allows you to easily create a Portfolio web site to showcase your work.

Requests rate limiting library for Ruby on Rails

Mounts /rails/erd in your Rails app. On every request the gem introspects ActiveRecord models and renders a Mermaid ERD viewer with Stimulus-driven filters, zoom/pan, copy & download. No pre-generated HTML file.

Rails Response Dumper is a library and command line tool to dump HTTP responses from a Rails application to the file system. These responses can then be consumed by other tools for testing and verification purposes.

A linting tool that helps you find any routes defined in your routes.rb file that don't have a corresponding controller action, and find any _path or _url calls that don't have a corresponding route in the routes.rb file.