Simpifies building tableless models or models backed by webservices. Create data type specific attributes with default if values.

Simple way to specify API params

Adapter from Active Model Serializers, to work in Sinatra from a more practical way with models

Siphon enables you to easily apply/combine/exclude your ActiveRecord scopes with params

Small library to check if SIP doc has valid front matter

Very simple automatic generation and saving nested attributes of models from html form. ActiveModel.

ActiveModel/ActiveRecord validator that can wrap other validators to notify of errors so that new validations can be safely added to an existing model.

solrsan is a lightweight wrapper for using Apache Solr within a Ruby application including Rails and Sinatra.

A simple Ruby survey DSL which handles questions and answers. You need to manage persistence yourself.

Social Security Number (SSN) Validation

a little lack of tests but it works!

A minimalist approach to managing object state, perhaps best described as "an enum with guard rails." Designed to work with `ActiveRecord` and `ActiveModel` classes, or anywhere where Rails validations are used.

StorageRoom is a CMS system for Mobile Applications (iPhone, Android, BlackBerry, ...). This library gives you an ActiveModel-like interface to your data.

A package of helpers that introduce some conventions and convenience for common behaviors

Taiwanese Id Validator

Removes the tedium of form filling with SitePrism by allowing you to specify a set of fields, actions and submissions rather than procedurally calling Capybara’s DSL methods.

Threatinator is a library and tool for parsing threat data feeds.

Write data to Timex Datalink devices with an optical sensor

Trust is a resource oriented framework for authorization control. It is compatible with Rails 3 and 4. It has a loose coupling from the models, and features a native Ruby implementation language. Support for inheritance and namespaced models as well as nested routes. Even permissions scheme supports inheritance.

Adds type validation for classes with ActiveModel::Validations.