You can use it in controller as a layer betwen controller and model

A module that helps you to implement the Use Case design pattern

Usecase Rails Generator

Accessible through a command-line script, UsefulDB lets you store and search useful commands and URLs by tag.

Useful measurements of time

Useful helpers methods for Good Rails App

Usefull tools

A set of useful matchers for RSpec

Adds a custom CSV and ZIP renderer to Rails applications

A Ruby gem to connect your application with the usekamba API

https://github.com/xRayUnlimited

This is my gem which is my homework from course geekhub.

Advance string comparison in ruby.

An idealized restaurant wait list API.

Simple wrapper for the UserAgent API https://useragentapi.com/

Randomize UserAgents for web crawling

Minimal ruby gem for list all user-agents supported by useragentstring.com site!

UserEngage (https://userengage.com) - Keep things simple with a single platform for all your messaging and relationships with customers.

This gem is a Ruby Wrapper made to use the Userfox API conveniently

Make long integer ids pretty, short and less confusing by shortening via conversion to base34