Rails

Database-backed Active Job backend

Action caching for Action Pack (removed from core in Rails 4.0)

Static page caching for Action Pack (removed from core in Rails 4.0)

Edit and display rich text in Rails applications

Active Record's Session Store extracted from Rails

Store files in Rails applications

Boot large Ruby/Rails apps faster

Run Rake/Rails commands through the console

Bundle and process CSS in Rails with Tailwind, PostCSS, and Sass via Node.js.

Integrate Dart Sass with the asset pipeline in Rails

Running Rails from Docker for easy start to development

Superseded by https://github.com/rails/website

Use ESM with importmap to manage modern JavaScript in Rails without transpiling or bundling.

A router for rails

A gem to automate using jQuery with Rails

Ruby on Rails unobtrusive scripting adapter for jQuery

Bundle and transpile JavaScript in Rails with esbuild, rollup.js, bun, or Webpack.

PJAX integration for Rails

Deliver assets for Rails

Add RJS, Prototype, and Scriptaculous helpers to Rails 3.1+ apps

The web application that runs https://contributors.rubyonrails.org

Brings back `assigns` and `assert_template` to your Rails tests

A virtual machine for Ruby on Rails core development

Extracting DomAssertions and SelectorAssertions from ActionView.

Create Rails projects without Ruby installed

Rails observer (removed from core in Rails 4.0)

Benchmark and profile your Rails apps

Ruby on Rails

Omakase Ruby styling for Rails

Ruby on Rails stylesheet engine for Sass

Rails application preloader

Sprockets Rails integration

Rack-based asset packaging system

Use Webpack to manage app-like JavaScript modules in Rails