Yes there is a gem to wash cars....

cascade-deleter is a ruby gem designed to delete items with all of their descendant items in their hierarchy.

Highly customizable data parser with a lot of DI

Caseninja converts input text to chain, snake, camel and pascal case. It will freely convert any text to any case.

The California Academy of Sciences has databased a great deal of their entomological specimen data, but it's generally only available through their own website with no API and no machine-readable export functionality. This gem attempts to ameliorate the situation by scraping ...

Provide a design pattern to manage large switch statements by mapping it to methods.

Lightweight money and currency handler for working with financial calculations.

Cassandra DB adapter inspired on Sequel

Powerful ORM for Cassandra

Utility to manage Cassandra Monitoring and Management

An unopinionated wrapper for the datastax cassandra gem.

allows you easily and reliably query ActiveRecord.

Simple structured object cache for ruby apps.

A casted hash

categoria presents a set of generators for domain-driven development in rails

Generates values from a categorical probability distribution in O(1) using Vose's Alias Method.

Modular implementation of ServiceObject pattern

Wrapper for Cato's Deep Bills API

A library/tool that does a small number of cat-related tasks.

asynchronously precompute and cache values when a class/module is loaded, not on the 1st call.