Shorter, env-scoped version of Rails' credentials

rails-css_unused scans your stylesheets (CSS/SCSS/Sass) and all view templates (ERB, HAML, Slim), ViewComponents, Phlex components, and Stimulus JS controllers to report CSS class selectors that are defined but never referenced. Supports BEM naming, dynamic class detection, source-file attribution, CI exit codes, and configurable ignore lists — zero runtime overhead.

Add custom csv renderer for Rails application

Simple datatable integration for Rails app

A gem that simplifies using datatables and hundreds of records via ajax

Use the database configuration from a rails app, without using rails

Protects your database from destructive rake tasks

Add rake db:resetup task = db:migrate:reset and db:seed

This gem provides functions to render complex information on Rails applications.

set default values for your active record models with a simple, concise DSL. : default :field_name => :value

A Model Context Protocol (MCP) server that allows AI agents to start, stop, and monitor Rails development servers

Generate SSL certificates for your rails development environment

A set of tools to help development on complex Ruby on Rails projects with many main apps and engines.

RailsDiscordNotifier captures unhandled exceptions in your Rails application and sends detailed error reports to a Discord channel using an incoming webhook. Customize the bot username, avatar, and message format via initializer.

Microservices distributed tracing The gem generates a request id which can be added as a tag in rails logs. Child services will reuse this tag with the help of this gem.

Docker generators for Rails

gem detect problems in your rails project

Rake tasks for dokku.

Get control of your domain model with Event Sourcing, CQRS and core concepts from Domain-Driven Design. RailsDomainModel provides an opinionated domain layer for Rails.

Extract the dominant color(s) from an image (remote image, locally image, base64 image etc...) Get HEX(A) color(s), RGB(A) color(s), HSL(A) color(s)