You can store s3 assets very easity using this

Amazon S3 direct uploader

Secure download for CarrierWave with CanCan

"A Rails gallery engine. Includes creating multiple galleries and photos. Multi uploading and cropping. Can extend gallery and photo model or controller. Configurable through yml configuration file."

A full Rails engine providing e-commerce functionality for any Rails 4 application.

SimpleShowcaseAdmin includes all the necessary logic to create a basic admin panel that allows for reorderable items that are grouped into categories. It does not include any frontend code.

Sinatra video manager

Description of AppComponent

CMS built on top of Active Admin.

gem to use WYSIWYG editor for rails user

Smartkiosk client application

Solidus extension for using Shopify liquid theme files

Upgrade Spina to 2.0 from a previous version

Adds batch processing to Spree. Includes batch capture and batch export of orders.

Spree extension to use carrierwave/fog instead of paperclip.

Spree extension to use carrierwave/cloudinary instead of paperclip.

Statixite allows you to easily manage multiple static websites. It is a mix of a content management solution as well as a deployment solution. It allows you to configure various deployment options such as S3, Rackspace, or Github Pages.

Sunrise is a Aimbulance CMS

Description of Supportcenter.

rails engine to add a very basic cms to an app