Content blocks are commonly used models representing editable page partials.

Thanks to https://gist.github.com/hiroshi/985457

Simple way to reuse routes logic in rails apps

With Controlled Versioning, you can make any model versionable. This will record suggested changes to the model, which can then be approved or declined according to your application's design.

A controller DSL for Rails that allows you to easily and quickly define both singular and collection model resources that can be operated on within the controller.Attempts to DRY up most of the boilerplate code at the top of each controller used to set up its state.

Creates controller and extended scaffolding for the model specified.

Pattern for assign instance variables in controllers for use in views, etc.

Conversations is a messaging system that enables users of devise-based Rails applications to exchanges messages with any other user. It supports conversations with multiple participants.

Convo is a Rails engine that provides a flexible and customizable conversation system for your Rails application, supporting threaded comments, notifications, and moderation.

A simple way to add cookie disclaimer.

Display a visual warning on your site to let visitors know that you use Cookes. Primarily intended for use with the UK Cookie Law

Rails asset pipeline bundling of the Cookie Consent JavaScript plugin.

cookieless_sessions implements a fallback mechanism for keeping Session-IDs (via GET-Parameter) on clients that doesn't support or allow cookies.

Provides a set of performance tools for our Rails apps

CopperEgg Application Performance Monitoring

You can copy data from rails staging environment to production. You can even copy 'Papercliped' model with its attachments.

CoreMerchant provides essential functionality for handling customers, products, and subscriptions in e-commerce and SaaS applications. Does not include payment integrations.

Core purpose is to allow you to re use the models and there relationships and concerns with various other apps.

Dashboard composed of social network posts.

Cornerstone provides customer care capabilities to an existing application by adding things like discussions and a knowledge base.