Almanac is the most elegant mountable blog engine that can be easily hooked up in the existing Rails application.

A simple to use Rails-Engine-Gem that offers an admin interface for trusted user. Easy integratable and highly configurable and agnostic. Works with ActiveRecord and Mongoid.

A modular CMS for Ruby on Rails 5 with an intuitive out-of-the-box interface to manage and customize components. Use Binda if you want to speed up your setup process and concentrate directly on what your application is about. Please read the documentation for more information and a quick start guide.

Carnival is an easy-to-use and extensible Rails Engine to speed the development of data management interfaces. When you use Carnival you can benefit from made features that are already done. If you need to change anything, you can write your own version of the method, using real Ruby code without worrying about the syntax of the engine.

Based on heroku dataclips feature, SQL -> Dataset

A simple plugin to handle, log, and customize production errors

Faalis is a ruby on rails engine which provides a platform to easily build a web application. Features like Dashboard, complex code generation and other awesome features. For more information checkout the docs.

Flexslider 2 Rails Gem

formtastic-plus-bootstrap makes a formtastic form to look like a bootstrap form.

This is the basic module of Golden Cobra. It offers Devise, ActiveAdmin, an article module, a menu module and global settings for an CMS

Mission Control for your projects and teams

Web UI for MailyHerald - Email processing solution for Ruby on Rails applications

Best rails admin panel. Great mechanism for customization and rapid development

Rails Admin plugin to manage Globalize translations

SlickGrid Integration for Rails 3.x

Rails engine supporting multiple auth providers per user.

Add social network capabilities to your projects.

Adds marketplace functionality to Solidus stores.

BitPay connector for the Spree shopping cart

Simple contact form manager for Spree