Inherited Resources speeds up development by making your controllers inherit all restful actions so you just have to focus on what is important. It makes your controllers more powerful and cleaner at the same time.

DecentExposure helps you program to an interface, rather than an implementation in your Rails controllers. The fact of the matter is that sharing state via instance variables in controllers promotes close coupling with views. DecentExposure gives you a declarative manner of exposing an interface to the state that controllers contain and thereby decreasing coupling and improving your testability and overall design.

Controller abstractor for Rails

resources_controller rails plugin: rc makes RESTful controllers fun

Parameter filter done OO, extending strong parameters.

Prevent form re-submition when hitting 'back'. Instead, choose where to redirect the user if she hits 'back', e.g. to the edit page of the record that was created.

Toast is a Rack application that hooks into Ruby on Rails. It exposes ActiveRecord models as a web service (REST API). The main difference from doing that with Ruby on Rails itself is it's DSL that covers all aspects of an API in one single configuration.

Use the power of Cancan to control the flow of your controllers.

Rails RESTful controller abstraction plugin.