shelf and tested ActiveModel/ActiveRecord validations. * [Enumerize](https://github.com/brainspec/enumerize) - Enumerated attributes with I18n and ActiveRecord/Mongoid/MongoMapper support. * [Goldiloader](https://github.com/salsify/goldiloader) - Automatic ActiveRecord eager loading. * [mini_record](https://github.com/DAddYE/mini_record) - ActiveRecord meets DataMapper, with MiniRecord