HTMLProofer is a set of tests to validate your HTML output. These tests check if your image references are legitimate, if they have alt tags, if your internal links are working, and so on. It's intended to be an all-in-one checker for your output.

ruby-hydra-minimal is a Ruby library for working with hyphenation patterns. It is a low-dependency variant of ruby-hydra.

Pg is the Ruby interface to the PostgreSQL RDBMS. It works with PostgreSQL 9.3 and later.

This gem provide built-in support for the Sass converter in Jekyll.

Test::Unit is unit testing framework for Ruby, based on xUnit principles. These were originally designed by Kent Beck, creator of extreme programming software development methodology, for Smalltalk's SUnit. It allows writing tests, checking results and automated testing in Ruby.

This package provides a Ruby wrapper around the Terraform command line interface so that Terraform can be more easily invoked from Ruby code.

Patron is a Ruby HTTP client library based on libcurl. It does not try to expose the full power (read complexity) of libcurl but instead tries to provide a sane API while taking advantage of libcurl under the hood.

MSpec is a specialized framework that is syntax-compatible with RSpec 2 for basic features. MSpec contains additional features that assist in writing specs for Ruby implementations in ruby/spec.

Cane fails your build if code quality thresholds are not met.

This module adds support for the TomDoc documentation format to YARD, a documentation generation tool for Ruby.

ruby_engine provides an RubyEngine class that can be used to check which implementation of Ruby is in use. It can provide the interpreter name and provides query methods such as RubyEngine.mri?.

MIME detection by extension or content, using the freedesktop.org.xml shared-mime-info database.

This package is a Standard Ruby Plugin providing configuration for rubocop-performance.

This gem is a Faraday adapter for the Net::HTTP library. Faraday is an HTTP client library that provides a common interface over many adapters.

AnyStyle is a very fast and smart parser for academic reference lists and bibliographies. AnyStyle uses powerful machine learning heuristics based on Conditional Random Fields and aims to make it easy to train the model with data that is relevant to your parsing needs.

This package provides the Ruby module AnyStyle. AnyStyle can also be used via the anystyle command-line utility or a web application, though the later has not yet been packaged for Guix.

This package provides a generalized Rack framework for multiple-provider authentication.

Flores is a fuzzing, randomization, and stress library to help tests uncover more bugs.

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

This library provides contracts for Ruby. A contract describes the correct inputs and output for a method, and will raise an error if a incorrect value is found.

This is an experimental gem that extracts low-level PDF functionality from Prawn.

This Ruby gem extends Faraday to perform multipart-post requests.

This is a parser for kramdown that converts Markdown documents in the GFM dialect to HTML.

This package provides a class to deal with collections of unordered, unique values

IRB is an interactive Ruby command-line tool for REPL (Read Eval Print Loop).