Easy way to map hashes

Hashie2 + ActiveModel 3, offering declared properties, validations, JSON serialization/deserialization

Tree behavior for ActiveRecord models and Mongoid documents.

HashMan takes any number (or uuid) and converts it to a unique hash. Includes methods on your class to access and reverse hash

Hash toolkit for Ruby ninja

Hashoid: a JSON/Hash to Object Mapper

A Ruby library of functions to access and manipulate hash data structures.

A small collection of useful hash extensions

Strains unwanted hash attributes from enumerable objects, a template object forms the Sieve

Utility hash functions.

Set schemas to convert hashes/json from different sources to ActiveRecord models

A gem extending Ruby's hash with useful utilities.

a Ruby DSL for walking through a Hash and processing it

A case insensitive hash!

Gem to assist with the display of imgix images

Automatically sets up usage of a relational table to contain user-created multi-locale string attributes

Logging your ActiveRecord model, and supply useful methods.

Keep a DRY multilingual translation of your ActiveRecord models' textual attributes

Has.Menu is an online service to discover restaurant menus. This utility is used internally to build and validate menu in YAML format.

Create one model backed by a primary table and a supplementary 'meta' table.