A Sequel plugin that helps building forms. It basically does them for you so that you can forget about the boring part. The kind of thing which is good to have in your toolbox for building a CMS.

Remembers references between content models in Radiant CMS.

Clone CMS pages in refinery

Forked and modified photo gallery engine from Martin Markech designed for integration with Refinery CMS.

A cms bootstrap for localized client websites.

The soul of cuchitril CMS. This handles the basic functionality

Build CMS's in a snap using just models.

A robust set of frontend design modules and layouts for the BitSmith multi-tenent CMS

EngineRoom aims to be a simple to use, unobtrusive admin interface for rails applications. It is designed to be an add-on for existing web apps and not a full blown CMS. Just add EngineRoom to an app and it will create a customizable interface for editing the content data.

Customize auto-generated sitemap in Camaleon CMS. Eliminate duplicate content and list pages.

Knitkit is CompassAE's content and digital asset management application. It is based on ideas and code adapted from Mephisto and adva_cms, with significant changes to integrate with the CompassAE object-relational layer and to harmonize the user interface with the rest of CompassAE.

OAuth component for Biovision CMS.

Before/after image slider for spina CMS

BrowserCMS is a general purpose, open source Web Content Management System (CMS), written in Ruby on Rails. This is a fork where the facility to have attachments stored on Amazon S3 has been added. Also caching has been changed to suit heroku

This gem retrieves data from a Ghost CMS through the content API.

Changes assets management in Maglev CMS to use Shrine.

MaglevCMS integrates a powerful website/page builder with a polished UX/UI into your Ruby on Rails application, backed by a flexible and robust CMS engine.

Extends Trusty CMS Layouts to support multiple sites, defined by domain

A headless CMS, a work in progress.

AgileRails, development tool for agile development of in-house (Intranet, business, private cloud) applications as well as CMS for creating complex, data-entry intensive web sites.