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

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.

Slim is a template language for Ruby that aims to reduce the syntax to the minimum while remaining clear.

This library allows rendering Scalable Vector Graphics (SVG) graphics directly into a Portable Document Format (PDF) document using the Prawn module.

Capybara is an integration testing tool for rack based web applications. It simulates how a user would interact with a website.

TestConstruct is a DSL for creating temporary files and directories during tests.

This package provides a collection of text algorithms: Levenshtein, Soundex, Metaphone, Double Metaphone, Porter Stemming.

m stands for metal, a better test/unit and minitest test runner that can run tests by line number.

Ruby i18n is an internationalization and localization solution for Ruby programs. It features translation and localization, interpolation of values to translations, pluralization, customizable transliteration to ASCII, flexible defaults, bulk lookup, lambdas as translation data, custom key/scope separator, custom exception handlers, and an extensible architecture with a swappable backend.

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

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

Lemon is a unit testing framework that enforces highly formal case-to-class and unit-to-method test construction. This enforcement can help focus concern on individual units of behavior.

Net::IMAP implements Internet Message Access Protocol (IMAP) client functionality. The protocol is described in IMAP.

This package provides a Mocha adapter for Bacon, allowing you to use the Mocha stubbing and mocking library with Bacon, a small RSpec clone.

Shindo is a simple depth first testing library for Ruby.

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

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.

BRASS (Bare-Metal Ruby Assertion System Standard) is a basic foundational assertions framework for other assertion and test frameworks to make use of.

Solargraph provides a comprehensive suite of tools for Ruby programming: intellisense, diagnostics, inline documentation, and type checking.

This package provides a Jekyll plugin to generate an Atom feed of your Jekyll posts.

Diffy provides a convenient way to generate a diff from two strings or files.

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

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.

multipart-parser is a simple parser for multipart MIME messages, written in Ruby, based on felixge/node-formidable's parser. It has the following characteristics:

• Pure Ruby

• Event-driven API

• Only supports one level of multipart parsing

• Does not perform I/O

• Does not depend on any other library.