A high-level IO library that provides validation, type conversion, and more for command-line interfaces. HighLine also includes a complete menu system that can crank out anything from simple list selection to complete shells with just minutes of work.

Easy upload management for ActiveRecord

memoize methods invocation

Faraday adapter for EM::Synchrony

Faraday adapter for Em::Http

Fluentd is an open source data collector designed to scale and simplify log management. It can collect, process and ship many kinds of data in near real-time.

Middleware that will make Rack-based apps CORS compatible. Fork the project here: https://github.com/cyu/rack-cors

Uglifier minifies JavaScript files by wrapping UglifyJS to be accessible in Ruby

Adds support for calculating Cyclic Redundancy Check (CRC) to the Digest module.

Toastr: Simple javascript toast notifications, plugged into the rails asset pipeline.

An elegant, structured (X)HTML/XML templating engine.

ActiveModel::Serializers allows you to generate your JSON in an object-oriented and convention-driven manner.

Provides a single point of entry for using basic features of ruby ORMs

Ruby API for Elasticsearch. See the `elasticsearch` gem for full integration.

Ruby integrations for Elasticsearch (client, API, etc.)

MRI+JRuby compatible command output capturing

RSpec results that your continuous integration service can read.

Helps creating valid Guard plugins and testing them

Use webpack to manage app-like JavaScript modules in Rails

RailsAdmin is a Rails engine that provides an easy-to-use interface for managing your data.