Matestack provides a collection of open source gems made for Ruby on Rails developers. Matestack enables you to craft interactive web UIs without JavaScript in pure Ruby with minimum effort. UI code becomes a native and fun part of your Rails app.

Transparent multi-tenanting for web applications based on Rails and Devise

Rails gem for dynamically adding and removing nested has_many association fields in a form. Uses jQuery and supports multiple nesting levels. Requires Ruby 1.9+ and the asset pipeline.

packs-rails establishes and implements a set of conventions for splitting up large monoliths.

ViewComponents for Polaris Design System

Rails integration for qu

Import functionality for Rails Admin

Rails_Admin FLAT theme overhaul

Manage money in Shopify with a class that wont lose pennies during division!

Garage extends your RESTful, Hypermedia APIs as a Platform

Extension to Delayed Job to enable workers to scale up when needed

Rich text editor for Active Admin using wysihtml5.

Add a blog to your Rails application in minutes with this mountable Rails Engine

Bootstrappers is the base Rails application using Bootstrap template and other goodies.

Delocalize is a tool for parsing localized dates/times and numbers.

Godmin is an admin framework for Rails 5+. Use it to build dedicated admin sections for your apps, or stand alone admin apps such as internal tools.

A good, simple, solid tagging extension for ActiveRecord

LINES lets you manage your posts in a clear, consistent frontend. The gracefully slender editor keeps your editing simple and lets you just splash around in your ideas. Once you're happy, just hit publish and see your text, code examples, images, and links shine.

Metamagic is a simple Ruby on Rails plugin for creating meta tags.

Want to automatically detect mobile devices that access your Rails application? Mobile Fu allows you to do just that. People can access your site from a Palm, Blackberry, iPhone, iPad, Nokia, etc. and it will automatically adjust the format of the request from :html to :mobile.