Simplest possible CMS for Rails 3

Qbrick is a Rails engine that offers a simple CMS.

CMS on Ruby on Rails

Provides storage management for the Fabulator Exhibit extension for use with the Radiant CMS.

RocketCMS fork

Cache Buster tag for Radiant CMS

Adds file uploading and linking to the Cadmus micro-CMS using Carrierwave

Description of OrdinaryCms.

Gem with SEO functionality independent from any CMS and embeddable in any Rails 4 app

Sunrise is a Aimbulance CMS: votes module

Camaleon CMS plugin to store media uploads with paperclip

Extends Trusty CMS to allow page ordering

Podcasting extension for Refinery CMS

Ruby on Rails Retailers extension for Refinery CMS

Link posts for Nesta CMS

Adds the post date to blog post permalinks in Nesta CMS.

Sluggable posts for Nesta CMS

A Content Management System for Rails

CLI to help with common tasks for Avo CMS such as linting.

C2 aspires to be a simple, drop in, Admin Portal + CMS for apps based on Rails 3 + Mongoid.