Net::SCP is a pure-Ruby implementation of the SCP client protocol.

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

The mapping gem maps model objects based on their class to a given output model. It is useful for versioning external interfaces (e.g. JSON APIs) or processing structured data from one format to another.

Nokogiri (鋸) parses and searches XML/HTML, and features both CSS3 selector and XPath 1.0 support.

The gem public_suffix is a domain name parser, written in Ruby, and based on the Public Suffix List. A public suffix is one under which Internet users can (or historically could) directly register names. Some examples of public suffixes are .com, .co.uk and pvt.k12.ma.us. The Public Suffix List is a list of all known public suffixes.

Rouge is a code highlighter written in Ruby. It supports more than 100 languages and outputs HTML or ANSI 256-color text. Its HTML output is compatible with stylesheets designed for pygments.

Oj is a JSON parser and generator for Ruby, where the encoding and decoding of JSON is implemented as a C extension to Ruby.

Orderedhash is a Ruby library providing a hash implementation that preserves the order of items and features some array-like extensions.

rb-inotify is a simple wrapper over the inotify Linux kernel subsystem for monitoring changes to files and directories.

This is a parser for kramdown that converts Markdown documents in the GFM dialect to HTML.

The rubyzip module provides ways to read from and create zip files.

This package can speed up Test::Unit, RSpec, Cucumber, and Spinach tests by running them concurrently across multiple CPU cores.

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.

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

Rerun is a tool to launch programs, then monitor the file system, and restart the program when any of the monitored files change. It's written in Ruby, but can be used for all programs.

This package provides a few useful extensions to core Ruby classes, including Array, Enumerable, Hash, Numeric, and String.

The Wapiti-Ruby gem provides a wicked fast linear-chain CRF API for sequence segmentation and labelling. It is based on the codebase of Wapiti.

This gem provides the classes LinkHeader and LinkHeader::Link, which represent HTTP Link headers conforming to RFC 5988. Objects can be constructed from and converted to text or a JSON-friendly Array representation. They can also be used to generate corresponding HTML link elements.

Rugged is a library for accessing libgit2 in Ruby. It gives you the speed and portability of libgit2 with the beauty of the Ruby language.

This package provides a class-level mixin to make managing fiber-local state easy. It provides easy access to a fiber-local state from a fiber, and defaults to a shared thread-local state.

Spinach is a high-level BDD framework that leverages the expressive Gherkin language to help you define executable specifications of your code.

Temple is an abstraction and framework for compiling templates to pure Ruby.

This package provides a set of Hoe plugins for tighter Git integration. It provides tasks to automate release tagging and pushing and changelog generation.

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