minitest-focus gives the ability focus on a few tests with ease without having to use command-line arguments. It introduces a focus class method for use in testing classes, specifying that the next defined test is to be run.

multi_test provides a uniform interface onto whatever testing libraries that have been loaded into a running Ruby process to help control rogue test/unit/autorun requires.

Cucumber HTML Formatter produces a HTML report for Cucumber runs. It is built on top of cucumber-react and works with any Cucumber implementation with a protocol buffer formatter that outputs Cucumber messages.

This is a Ruby utility library for Cucumber that detects a CI environment from environment variables.

The Cucumber Compatibility Kit (CCK) aims to validate a Cucumber implementation's support for the Cucumber Messages protocol.

Cucumber Messages for Ruby is a library which allows serialization and deserialization of the protocol buffer messages used in Cucumber.

Mini-portile is a port/recipe system for Ruby developers. It provides a standard way to compile against specific versions of libraries to reproduce user environments.

Sorcerer generates Ruby code from a Ripper-like abstract syntax tree (i.e. S-Expressions). Sorcerer is targeted mainly at small snippets of Ruby code, expressible in a single line. Longer examples may be re-sourced, but they will be rendered in a single-line format.

Hoe is a rake/rubygems helper for project Rakefiles. It helps manage, maintain, and release projects and includes a dynamic plug-in system allowing for easy extensibility. Hoe ships with plug-ins for all the usual project tasks including rdoc generation, testing, packaging, deployment, and announcement.

This module provides a String#unindent Ruby method to unindent strings, which can be useful to unindent multiline strings embedded in already-indented code.

Minitest provides a complete suite of Ruby testing facilities supporting TDD, BDD, mocking, and benchmarking.

This library provides a way to run code around tests in Minitest, written using either the unit test or spec style.

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.

TTFunk is a TrueType font parser written in pure Ruby. It is used as part of the Prawn PDF generator.

This package provides a set of methods to manipulate an IP address. Both IPv4 and IPv6 are supported.

This library can read and update netrc files, preserving formatting including comments and whitespace.

minitest/reporters provides a custom Minitest runner to improve how the test state is reported. A number of different reporters are available, including a spec reporter, progress bar reporter, a HTML reporter.

This package provides a collection of RuboCop cops to check for performance optimizations in Ruby code.

domain_name is a Domain name manipulation library. It parses a domain name ready for extracting the registered domain and TLD (Top Level Domain). It can also be used for cookie domain validation based on the Public Suffix List.

Rack middleware that can be used to protect against typical web attacks. It can protect all Rack apps, including Rails. For instance, it protects against cross site request forgery, cross site scripting, clickjacking, directory traversal, session hijacking and IP spoofing.

With Serverspec, you can write RSpec tests for checking your servers are configured correctly.

Serverspec tests your servers’ actual state by executing command locally, via SSH, via WinRM, via Docker API and so on. So you don’t need to install any agent software on your servers and can use any configuration management tools, Puppet, Ansible, CFEngine, Itamae and so on.

But the true aim of Serverspec is to help refactoring infrastructure code.

Asciidoctor Diagram is a set of Asciidoctor extensions that enable you to add diagrams, which you describe using plain text, to your AsciiDoc document. The extension will run the appropriate diagram processor to generate an image from the input text. The generated image is then inserted into your converted document.

Detailed usage instructions can be found on the Asciidoctor documentation site.

Asciidoctor Diagram was inspired by the AsciiDoc PlantUML filter.

MultiXml provides swappable XML backends utilizing either LibXML, Nokogiri, Ox, or REXML.

HighLine provides a high-level IO library that provides validation, type conversion, and more for command-line interfaces. HighLine also includes a menu system for providing multiple options to the user.