Sanitize is a whitelist-based HTML and CSS sanitizer. Given a list of acceptable elements, attributes, and CSS properties, Sanitize will remove all unacceptable HTML and/or CSS from a string.

shoulda-context is the context framework extracted from Shoulda. Instead of writing Ruby methods with lots_of_underscores, shoulda-context adds context, setup, and should blocks combine to produce natural test method names.

stackprof is a fast sampling profiler for Ruby code, with cpu, wallclock and object allocation samplers.

Lino provides an interface to run external commands. It provides an interface to add options as well as managing the standard input, output and error streams.

This package provides a SimpleCov formatter to generate a lcov-style coverage report.

Power-assert is an assertion library providing descriptive assertion messages for tests.

Em-websocket is an EventMachine based WebSocket server implementation.

Shellany is a Ruby library providing functions to capture the output produced by running shell commands.

This library provides a simple API for XML processing in Ruby.

This package provides a MiniTest plugin for displaying the slowest tests in a minitest suite.

This gem provides beautiful console logging for Ruby applications. It implements fast, buffered log output and has the following features:

• Thread safe global logger with per-fiber context

• Carry along context with nested loggers

• Enable/disable log levels per class

• Detailed logging of exceptions

• Beautiful logging to the terminal or structured logging using JSON.

Syntax Tree is a suite of tools built on top of the internal CRuby parser. It provides the ability to generate a syntax tree from source, as well as the tools necessary to inspect and manipulate that syntax tree. It can be used to build formatters, linters, language servers, and more.

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

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

Promise is a Ruby implementation of the Promises/A+ specification. It provides 100% mutation coverage, tested on MRI 1.9, 2.0, 2.1, 2.2, Rubinius, and JRuby.

This package provides a function to deep freeze Ruby objects.

This package provides support for encoding and decoding binary data using a Base64 representation.

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

rainbow provides a string presenter object to colorize strings by wrapping them in ANSI escape codes.

nio provides cross-platform asynchronous I/O primitives in Ruby for scalable network clients and servers.

Dotenv is a Ruby library for setting environment variables defined in a .env file. This is the Rails variant, adapted for use with Ruby on Rails projects.

This package provides a RuboCop plugin that can be used for code style checking of Capybara test files (RSpec, Cucumber, Minitest).

PandocRuby is a wrapper for Pandoc, a Haskell library with command line tools for converting one markup format to another. Pandoc can convert documents from a variety of formats including markdown, reStructuredText, textile, HTML, DocBook, LaTeX, and MediaWiki markup to a variety of other formats, including markdown, reStructuredText, HTML, LaTeX, ConTeXt, PDF, RTF, DocBook XML, OpenDocument XML, ODT, GNU Texinfo, MediaWiki markup, groff man pages, HTML slide shows, EPUB, Microsoft Word docx, and more.

Ruby Bindings for the GNU LibIDN library, an implementation of the Stringprep, Punycode and IDNA specifications. These are used to encode and decode internationalized domain + names according to the IDNA2003 specifications.

Included are the most important parts of the Stringprep, Punycode and IDNA APIs like performing Stringprep processings, encoding to and decoding from Punycode strings and converting entire domain names to and from the ACE encoded form.