minitest provides a complete suite of testing facilities supporting TDD, BDD, and benchmarking. "I had a class with Jim Weirich on testing last week and we were allowed to choose our testing frameworks. Kirk Haines and I were paired up and we cracked open the code for a few test ...

Diff::LCS computes the difference between two Enumerable sequences using the McIlroy-Hunt longest common subsequence (LCS) algorithm. It includes utilities to create a simple HTML diff output format and a standard diff-like tool. This is release 1.6.1, providing a simple extension that allows fo...

The mime-types library provides a library and registry for information about MIME content type definitions. It can be used to determine defined filename extensions for MIME types, or to use filename extensions to look up the likely MIME type definitions. Version 3.0 is a major release that requi...

A really Ruby Mail handler.

rubyzip is a ruby module for reading and writing zip files

EXtended http(s) CONnections

HTTP::Cookie is a Ruby library to handle HTTP Cookies based on RFC 6265. It has with security, standards compliance and compatibility in mind, to behave just the same as today's major web browsers. It has builtin support for the legacy cookies.txt and the latest cookies.sqlite formats of Mozill...

This is a Domain Name manipulation library for Ruby. It can also be used for cookie domain validation based on the Public Suffix List.

A simple HTTP and REST client for Ruby, inspired by the Sinatra microframework style of specifying actions: get, put, post, delete.

Unicode Normalization Form support library for CRuby

This is a wrapper library to bring Unicode Normalization Form support to Ruby/JRuby.

WebMock allows stubbing HTTP requests and setting expectations on HTTP requests.

bcrypt() is a sophisticated and secure hash algorithm designed by The OpenBSD project for hashing passwords. The bcrypt Ruby gem provides a simple wrapper for safely handling passwords.

Arel Really Exasperates Logicians Arel is a SQL AST manager for Ruby. It 1. Simplifies the generation of complex SQL queries 2. Adapts to various RDBMSes It is intended to be a framework framework; that is, you can build your own ORM with it, focusing on innovative object and collection modeli...

STDOUT text formatting

Forms made easy!

A simple, Git-powered wiki with a sweet API and local frontend.

FastImage finds the size or type of an image given its uri by fetching as little as needed.

Interactive Ruby command-line tool for REPL (Read Eval Print Loop).

ruby_parser (RP) is a ruby parser written in pure ruby (utilizing racc--which does by default use a C extension). It outputs s-expressions which can be manipulated and converted back to ruby via the ruby2ruby gem. As an example: def conditional1 arg1 return 1 if arg1 == 0 return...