Rack::Test is a small, simple testing API for Rack applications. It can be used on its own or as a reusable starting point for Web frameworks and testing libraries to build on.

pry-stack_explorer is a plugin for the Pry REPL that add support to navigate the call-stack.

Bio-logger is a wrapper around Log4r adding extra logging features such as filtering and fine grained logging.

CI::Reporter is an add-on to Ruby testing frameworks that allows you to generate XML reports of your test runs. The resulting files can be read by a continuous integration system that understands Ant's JUnit report format.

This package provides a WebSocket base for a Ruby client and server.

The Hashery is a tight collection of Hash-like classes. Included are the auto-sorting Dictionary class, the efficient LRUHash, the flexible OpenHash and the convenient KeyHash. Nearly every class is a subclass of the CRUDHash which defines a CRUD (Create, Read, Update and Delete) model on top of Ruby's standard Hash making it possible to subclass and augment to fit any specific use case.

This library uses the output of the ps command to create a process tree data structure for the current host.

This package provides a pure Ruby implementation of the RFC 7519 OAuth JWT standard.

This extends the bacon testing framework with useful extensions to disable tests, have before and after blocks that run once and more.

This package provides memory profiling routines for Ruby.

SilentStream is an extraction of some parts of ActiveSupport's Kernel Reporting Core Extensions around silencing IO streams.

This package provides a simple WebSocket client for Ruby.

The options library helps with parsing keyword options in Ruby functions.

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.

Ruby-Locale is the pure ruby library which provides basic APIs for localization.

This library provides the functionality to create, modify, and delete boxes, versions, and providers on HashiCorp's Vagrant Cloud.

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

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

Coderay is a Ruby library that provides syntax highlighting for select languages.

Net::SSH is a pure-Ruby implementation of the SSH2 client protocol. It allows you to write programs that invoke and interact with processes on remote servers, via SSH2.

Middleware is a generalized implementation of a middleware abstraction for Ruby.

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

minitest-rg changes the colour of the output from Minitest.

jaro_winkler is an implementation of Jaro-Winkler distance algorithm. It is written as a C extension and will fallback to a pure Ruby implementation on platforms where this is unsupported.