Ruby/ProgressBar is an extremely flexible text progress bar library for Ruby. The output can be customized with a flexible formatting system including: percentage, bars of various formats, elapsed time and estimated time remaining.

factory_bot provides a framework and DSL for defining and using factories - less error-prone, more explicit, and all-around easier to work with than fixtures.

A simple HTTP and REST client for Ruby, inspired by the Sinatra microframework style of specifying actions: get, put, post, delete.

Loads environment variables from `.env`.

Capybara is an integration testing tool for rack based web applications. It simulates how a user would interact with a website

This package provides the Ruby driver library for the RethinkDB database server.

WebSocket protocol handler with pluggable I/O

Generic extension manager for WebSocket connections

A Ruby wrapper for the OAuth 2.0 protocol built with a similar style to the original OAuth spec.

FSEvents API with Signals catching (without RubyCocoa)

WebMock allows stubbing HTTP requests and setting expectations on HTTP requests.

MessagePack is a binary-based efficient object serialization library. It enables to exchange structured objects between many languages like JSON. But unlike JSON, it is very fast and small.

Signet is an OAuth 1.0 / OAuth 2.0 implementation.

bcrypt() is a sophisticated and secure hash algorithm designed by The OpenBSD project for hashing passwords. The bcrypt Ruby gem provides a simple wrapper for safely handling passwords.

factory_girl provides a framework and DSL for defining and using factories - less error-prone, more explicit, and all-around easier to work with than fixtures.

Easy upload management for ActiveRecord

Upload files in your Ruby applications, map them to a range of ORMs, store them on different backends.

The OS gem allows for some useful and easy functions, like OS.windows? (=> true or false) OS.bits ( => 32 or 64) etc"

Great Ruby debugging companion: pretty print Ruby objects to visualize their structure. Supports custom object formatting via plugins

Manipulate images with minimal use of memory via ImageMagick