The ANSI project is a superlative collection of ANSI escape code related libraries eabling ANSI colorization and stylization of console output. Byte for byte ANSI is the best ANSI code library available for the Ruby programming language.

A priority queue is like a standard queue, except that each inserted elements is given a certain priority, based on the result of the comparison block given at instantiation time. Retrieving an element from the queue will always return the one with the highest priority.

Radix is a very easy to use Ruby library for converting numbers to and from any base. It supports both Integer, Float and Rational numbers, as well as representational string-notations that need not be in ASCII order.

Tapout is a TAP consumer that can take any TAP, TAP-Y or TAP-J stream and output it in a variety of useful formats.

QED (Quality Ensured Demonstrations) is a TDD/BDD framework utilizing Literate Programming techniques.

Use TomDoc documentation format with YARD.

Think of Executable as a *COM*, a Commandline Object Mapper, in much the same way that ActiveRecord is an ORM, an Object Relational Mapper. A class utilizing Executable can define a complete command line tool using nothing more than Ruby's own method definitions.

Finder is a general purpose file finder for Ruby. Finder can search RubyGems, Roll libraries and Ruby's standard $LOAD_PATH and system data directory for the active or the most current library files. It is especially useful for implementing library-based plugin systems.

Sanitize and sterilize HTML, also includes a CSS filter.

Instance is a spin-off of Ruby Facets. It provides a simple convenient API for accessing an object's state.

Lemon is a unit testing framework that tightly correlates class to test case and method to test unit.

MiniTap provides a MiniTest TAP-Y/J report format suitable for use with TAPOUT.

OStruct2 is a reimplementation of Ruby's standard ostruct.rb library. This new OpenStruct class addresses issues the original has with conflicting member names and cloning.

Rubytest is a universal test harness for Ruby. It can handle any compliant test framework, even running tests from multiple frameworks in a single pass. This is the core component of the system, and is the only part strictly necessary to run tests.

Every Rubyist is aware of Minero Aoki's ever useful setup.rb script. It's how most of us used to install our Ruby programs before RubyGems came along. And it's still mighty useful in certain scenarios, not the least of which is the job of the distribution package managers. While still providing the usual setup.rb script that one can distribute with a project, Setup also works as a stand-alone application. Instead of distributing setup.rb with a package, just instruct your users to install Ruby Setup and use it instead.

TomParse provides no other functionality than to take a code comment and parse it in to a convenient object-oriented structure in accordance with TomDoc standard.

Anise is an annotations systems for the Ruby programming lanaguage.

Ruby is officially deprecating autoload. Well, some people may prefer to keep it! Moreover, Ruby's implementation has had a bug in it for-like-ever. This gem fixes that problem too.

Alternate loading system for Ruby allowing version multiplicity.

Brite is an easy to use, light-weight website generator. It supports a variety of backend rendering engines including erb, liquid, rdoc, markdown, textile and so on.