ActionParameter helps you move all your parameter's logic into it's own class. This way you'll keep your controllers dry and they would be easier to test.

Keep a DRY history of your ActiveRecord models' changes

Adds ActiveRecord-specific methods to Dry::Initializer

Using Inherited Resources is an excellent way to reduce the amount of repetition in your controllers. But what about views? A lot of times resources share the same views, so why not DRY 'em up using Inherited Resources Views!

Several additions for DRYer RSpec code

Pipeline operator for callable objects

Build seaworthy command-line apps like a Captain with a powerful Ruby DSL.

Dryopteris erythrosora is the Japanese Shield Fern. It also can be used to sanitize HTML to help prevent XSS attacks.

Logging for Ruby

Keep your code DRY by inferring column validations from table properties! Automagically validate presence, length, numericality, inclusion and uniqueness of ActiveRecord backed columns.

A framework for DRY RESTful APIs in Ruby on Rails.

Inspired by dry-initializer and virtus, portrayal is a minimalist gem that takes a somewhat different approach to building struct-like classes. It steps away from types, coersion, and writer methods in favor of encouraging well-designed constructors. Read more in the Philosophy section of the README.

Dryopteris erythrosora is the Japanese Shield Fern. It also can be used to sanitize HTML to help prevent XSS attacks.

shared base for request_handler using dry-* gems

InheritedViews brings the DRY principle to the controller and view layers within Rails applications

SuperResources DRYs up your controller code.

Very simple DRY admin UI.

Edifice makes your Rails life easier. It's designed to simplify CSS & JS integration in your Rails app by following the principle of DRY, less obtrusive markup. Stop writing unnecessary javascript boilerplate, stop wasting time namespacing view CSS and start enjoying rails again..

A rails asset gem for dry-observer

Know how you can't just use 'form_for' in rails with a newly initialized ActiveResource object? Ever get annoyed at having to add default attributes to your newly initialized ActiveResource objects? Fortify gives you the power to DRY'ly define default attributes for your ActiveResource derived classes.