Rails controllers violate the Single Responsibility Principle. Each “action” has a different responsibility and should be contained in a separate object.

This lesson also applies to other projects I've worked on (e.g. frameworks built on top of Backbone).

Great ramble.

An admin interface for Rails with a DSL for customization.

RadientCMS ported to PHP. Nice.

A port of Ruby on Rails to the Javascript language. Can be used either client-side or server-side via Rhino.

The source code for spot.us, citizen-funded reporting. Other possibilities: community-funded relief and development projects, community-funded church projects, community-funded charities, community-funded city development, community-funded ____. Puts public service in the hands of the public and keeps it accountable.

Along the same lines as CushyCMS, Webby is a little Rails app that helps you manage static pages.

A RoR Open Source CMS for "small teams" . Very Developer friendly with a 37signals-esque backend.