After you run assets:precompile your assets will be synchronised with your S3 bucket or Rackspace Cloud Files container, deleting unused files and only uploading the files it needs to.

Adds an abstract EachValidator superclass that you can use to create localizable validations.

Provides localized formating for postal addresses.

Polymorphic address models, address normalization, address web services, address autocomplete, maps

Logging, Tracing, and Gelf Logging for rails

Interactor + Form Object + ActiveModel::Validation

Log Warrior for your best logging tools.

ActiveModel-compliant CouchDB ORM

Louche provides common validators for ActiveModel/ActiveRecord classes

Validate numbers using Luhn Algorithm

Validates mac format with the mac_address gem.

A model based on ActiveModel that provides mass assignment with role support.

Rails 3 validators for magick numbers like PESEL, NIP, REGON

A mass mailing tool for real threads aficionados

A mail gem based validator for rails

Mail validation for ActiveModel

DynamoDB Client Wrapper

Business logic for e-commerce checkouts

MarkMapper is a Object-Document Mapper for Ruby and Rails

Markun is Markdown bulk converter with menu link