The ptools (power tools) library extends Ruby's core File class with many additional methods modelled after common POSIX tools, such as File.which for finding executables, File.tail to print the last lines of a file, File.wc to count words, and so on.

Base32 is a library which provides base32 decoding and encoding.

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

The PDF::Reader library implements a PDF parser conforming as much as possible to the PDF specification from Adobe. It provides programmatic access to the contents of a PDF file with a high degree of flexibility.

Bake Test External adds a test:external action to the bake command to run the test suites of dependent projects to check for breakage.

Ruby Bindings for the GNU LibIDN library, an implementation of the Stringprep, Punycode and IDNA specifications. These are used to encode and decode internationalized domain + names according to the IDNA2003 specifications.

Included are the most important parts of the Stringprep, Punycode and IDNA APIs like performing Stringprep processings, encoding to and decoding from Punycode strings and converting entire domain names to and from the ACE encoded form.

This small library lets you see which property values are supported by the regular expression engine of the Ruby version you are running and can directly read out their code point ranges. In other words, it determines all supported values for \pvalue expressions and what they match.

This package adds step-by-step debugging and stack navigation capabilities to pry, using byebug.

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

RSpec::Its provides the its method as a short-hand to specify the expected value of an attribute. For example, one can use its(:size)\should eq(1)\.

ChunkyPNG is a pure Ruby library that can read and write Portable Network Graphics (PNG) images without depending on an external image library. It tries to be memory efficient and reasonably fast. It has features such as:

• Decoding support for any image that the PNG standard allows. This includes all standard color modes, all bit depths, all transparency, and interlacing and filtering options.

• Encoding support for images of all color modes (true color, grayscale, and indexed) and transparency for all these color modes. The best color mode is chosen automatically, based on the amount of used colors.

• Read/write access to the image's pixels.

• Read/write access to all image metadata that is stored in chunks.

• Memory efficiency: fixnum are used, i.e. 4 or 8 bytes of memory per pixel, depending on the hardware).

• Performance: ChunkyPNG is reasonably fast for Ruby standards, by only using integer math and a highly optimized saving routine.

• Interoperability with RMagick.

ChunkyPNG is vulnerable to decompression bombs and can run out of memory when loading a specifically crafted PNG file. This is hard to fix in pure Ruby. Deal with untrusted images in a separate process, e.g., by using fork or a background processing library.

This library can read and update netrc files, preserving formatting including comments and whitespace.

Org-ruby is an org-mode parser written in Ruby. The most significant thing this library does today is convert org-mode files to HTML or Textile or Markdown.

This package provides a simple, fast MySQL library for Ruby, binding to libmysql.

Rubytest is a testing meta-framework for Ruby. It can handle any compliant test framework and can run tests from multiple frameworks in a single pass.

KPeg is a simple PEG library for Ruby. It provides an API as well as native grammar to build the grammar. KPeg supports direct left recursion of rules via the OMeta memoization technique.

The Polyglot library allows a Ruby module to register a loader for the file type associated with a filename extension, and it augments require to find and load matching files.

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

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.

Slop provides a Ruby domain specific language for gathering options and parsing command line flags.

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

This package provides a pure Ruby library for event-driven IO.

This package provides a small C extension to speed up variable length integers (varint) in Ruby Protocol Buffers.

This gem provides parser dictionary data for AnyStyle.