- Gem Devise
- RuboCop: melhore seu código usando boas práticas
- ActiveModel::Serializer implementation and Rails hooks
- This gem gives every ActiveRecord::Base object the possibility to do a deep clone that includes user specified associations.
- carrierwaveuploader/carrierwave: Classier solution for file uploads for Rails, Sinatra and other Ruby web frameworks
- Learn Ruby on Rails as You Modify a Craigslist Clone