Net::HTTP::Persistent manages persistent HTTP connections using Net::HTTP, supporting reconnection and retry according to RFC 2616.

Unicode::DisplayWidth is a Ruby library which can determine the display width of strings in Ruby.

This library implements HTTP's digest authentication scheme based on RFC 2617. This enables the use of the digest authentication scheme instead of the more insecure basic authentication scheme.

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

This library provides functionality for retrieving email via POP3, the Post Office Protocol version 3, as specified by RFC1939.

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.

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

Asciidoctor is a text processor and publishing toolchain for converting AsciiDoc content to HTML5, DocBook 5, PDF, and other formats.

HashDiff is a Ruby library to compute the smallest difference between two hashes.

Yell is a comprehensive logging replacement for Ruby. It defines multiple adapters, various log level combinations and message formatting options.

This package provides a set of parsers for Accept and Accept-Language HTTP headers.

This package provides a Ruby binding to the Ed25519 elliptic curve public-key signature system described in RFC 8032.

This library contains some useful functionality to support the development of Ruby gems.

OpenURI with transparent disk caching, which is useful to avoid making excessive queries, for example when scraping web pages.

Bandwidth IRIS is a Ruby SDK for Bandwidth Phone Number Dashboard. It is a Ruby Client library for IRIS / BBS API.

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

Notiffany is a Ruby wrapper library for notification libraries such as Libnotify.

Hashie is a collection of classes and mixins that make Ruby hashes more powerful.

This library provides Ruby with an interface for validating JSON objects against a JSON schema conforming to JSON Schema Draft 4. Legacy support for JSON Schema Draft 3, JSON Schema Draft 2, and JSON Schema Draft 1 is also included.

Antwrap is a Ruby module that wraps the Apache Ant build tool. Antwrap can be used to invoke Ant tasks from a Ruby or a JRuby script.

This RSpec plugin allows you to use block_is_expected similarly to how you would use is_expected if a block was wrapping the subject.

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

Exception2MessageMapper (e2mmap) is a helper module for easily defining exceptions with predefined messages.

Hamster provides 6 persistent data structures: Hash, Vector, Set, SortedSet, List, and Deque (which works as an immutable queue or stack).