RangeCompresses is a tiny library that allows compressing arrays of objects into arrays of ranges. For example, it can turn the following: [1, 2, 3, 4, 6, 8, 9, 10] into [1..4, 6..6, 8..10].

Net::IMAP implements Internet Message Access Protocol (IMAP) client functionality. The protocol is described in IMAP.

Cucumber is a tool for running automated tests written in plain language. It's designed to support a Behaviour Driven Development (BDD) software development workflow.

Clap provides command line argument parsing features. It covers the simple case of executing code based on the flags or parameters passed.

Launchy is helper class for launching applications in a fire and forget manner. The aim of Launchy is to provide a common approach to launching external applications from within Ruby programs.

The rubyzip module provides ways to read from and create zip files.

Sentry provides a gem that provides a client interface for the Sentry error logger.

Delayed_job (or DJ) encapsulates the common pattern of asynchronously executing longer tasks in the background. It is a direct extraction from Shopify where the job table is responsible for a multitude of core tasks.

This unmaintained package provides a Prawn extension that allows including other Portable Document Format (PDF) documents as background or combining several PDF documents into one. This functionality used to be part of Prawn itself, but was extracted from Prawn 0.15.0 because of its many longstanding issues.

MailCatcher runs a super simple SMTP server which catches any message sent to it to display in a web interface. Run mailcatcher, set your favourite app to deliver to smtp://127.0.0.1:1025 instead of your default SMTP server, then check out http://127.0.0.1:1080 to see the mail.

Given a string pattern, Mustermann will turn it into an object that behaves like a regular expression and has comparable performance characteristics.

This gem provides a Power Assert implementation for Minitest. It is inspired by the test-unit-power_assert gem.

HTTP::Cookie is a Ruby library to handle HTTP Cookies based on RFC 6265. It has been designed with security, standards compliance and compatibility in mind, to behave just the same as today's major web browsers. It has built-in support for the legacy cookies.txt and cookies.sqlite formats of Mozilla Firefox.

RSpec::Wait strives to make it easier to test asynchronous or slow interactions.

RSpec::Its provides the its method as a short-hand to specify the expected value of an attribute. For example, one can use its(:size)\should eq(1)\.

This package provides methods for benchmarking Ruby code, giving detailed reports on the time taken for each task.

Forwardable Extended provides more Forwardable methods for your source as Forwardable::Extended.

The PDF::Reader library implements a PDF parser conforming as much as possible to the PDF specification from Adobe. It provides programmatic access to the contents of a PDF file with a high degree of flexibility.

Liquid is a template language written in Ruby. It is used to load dynamic content on storefronts.

Mustache is a framework-agnostic way to render logic-free views. Think of Mustache as a replacement for your views. Instead of views consisting of ERB or HAML with random helpers and arbitrary logic, your views are broken into two parts: a Ruby class and an HTML template.

Rubytest CLI is a command-line interface for running tests for Rubytest-based test frameworks. It provides the rubytest executable.

Data URIs allow resources to be embedded inside a URI. The URI::Data class provides support for parsing these URIs using the normal URI.parse method.

This library provides functionality for retrieving email via POP3, the Post Office Protocol version 3, as specified by RFC1939.

The minitest-proveit MiniTest extension ensures all tests to prove success (via at least one assertion) rather than rely on the absence of failure.