Moderated fields or whole model instances are serialized and saved into a separate moderations table. The moderation can then be accepted and the changes will be applied to the model. This way, lookups for existing, accepted fields or entries will be much faster than if using something like Paper...

Knowledge Base is a bunch of models for Ruby on Rails that you probably need to build your own

Kuhsaft is a Rails engine that offers a simple CMS.

MTDevise Rails 5.1 engine that adds multi-tenant basecamp style user logins (multi-tenant authetication using devise) to your ruby on rails application.

Adds support for a picture_tag and several utilities to automatically convert images to WebP

The peoplefinder provides searchable staff profiles for your organisation. Since it's a rails engine, you can re-skin it for your organisation.

Sunrise is a Open Source CMS

This gem preps a new Rails app with some of the best Rails gems and Jquery sweetness available( Twitter-Bootstrap, Devise, CanCan, Rails Admin, Spreadsheet, ) Not only does it takes care of the installation of these gems, it also extends your scaffolds to give aesthetically improved views. Furthe...

Administrative and social network platform for closed user groups.

Converts ActiveAdmin into a simple CMS

Gem that focus on making a public site's resources very quickly while being very configurable!, supports facebook sharing, instagram and google analytics integration

Dead simple asset uploader attachments for your active record models

Bizside is an utilities to assist building web application.

CMS base on Rails Engin.

A Rails engine for adding blogging to any Rails 4 application

Automatically sends carrierwave uploads to AttachmentScanner to search for viruses, malware and other malicious files.

Places a serialized file into a field as a Base64 string and returns the data-url for it

Box.net/Box.com integration for CarrierWave.

A storage plugin for carrierwave that will retrieving files from a secondary storageif the file is not present in the primary storage. New files will always be stored in the primary storage. This is perfect for use while migrating from one storage to another, or to avoid polluting...

Wrapper for cloudflare transforming images