This pure ruby library provides spawn() which is almost perfectly compatible with ruby 1.9's.

This gem provides a DSL that makes it easy to write reports of various types in ruby. It eliminates the need to litter your source with puts statements, instead providing a more readable, expressive interface to your application.

rubocop is a Ruby code style checking tool. It aims to enforce the community-driven Ruby Style Guide.

bake-test automatically discovers how to run local test suites for Ruby projects. It supports rspec, sus, as well as rake.

ruby_version provides a RubyVersion module to simplify checking for the right Ruby version in software.

ast is a Ruby library for working with Abstract Syntax Trees. It does this through immutable data structures.

This package provides a plugin specification for Ruby linter and formatter rulesets.

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

Niceogiri provides wrappers and helpers for XML manipulation using Nokogiri.

Multipart-Post Adds multipart POST capability to Ruby's net/http library.

This gems add the --watch switch to the jekyll CLI interface. It allows Jekyll to rebuild your site when a file changes.

This package containse the JSON parsing tools shared between a number of providers in the fog gem. fog is a Ruby cloud services library.

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.

WWTD is a Travis Simulator that lets you run test matrices defined in .travis.yml on your local machine, using rvm, rbenv, or chruby to test different versions of Ruby.

Contest allows writing declarative Test::Unit tests using nested contexts without performance penalties.

WebMock allows stubbing HTTP requests and setting expectations on HTTP requests. This is useful when testing software.

Dotenv is a Ruby library for setting environment variables defined in a .env file.

skiptrace provides a way to access the bindings that relate to exceptions in Ruby, providing more information about the context in which the exception occurred.

This library provides a high-level API that wraps the ZeroMQ networking library using the Ruby foreign function interface (FFI). It is a pure Ruby wrapper, hence is compatible with any Ruby runtime that has support for FFI.

Mercenary is a lightweight and flexible library for writing command-line apps in Ruby.

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

websocket-driver provides a complete implementation of the WebSocket protocols that can be hooked up to any TCP library

Archive::Tar::Minitar is a pure-Ruby library and command-line utility that provides the ability to deal with POSIX tar archive files.

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