ppl is a command-line address book using vCard & git for storage and synchronisation

The standard Prismic.io's API library.

Pivotal Tracker Command Line Interface

Fetch, Upload, Organize, and Distribute Software Packages

Qo is a querying library for Ruby pattern matching

Finding time-consuming database queries for ActiveRecord-based Rails Apps

Template generator for Ruby on Rails 3 applications

Rawler is a tool that crawls the links of your website

Carbon Five Rails application generator

A Ruby wrapper for Windows Kernel functions for monitoring the specified directory or subtree

Recog is a framework for identifying products, services, operating systems, and hardware by matching fingerprints against data returned from various network probes. Recog makes it simply to extract useful information from web server banners, snmp system description fields, and a whole lot more.

A handy dandy way to avoid using #accepts_nested_attributes_for

Remarkable: a framework for rspec matchers, with support to macros and I18n.

Remarkable ActiveModel: collection of matchers and macros with I18n for ActiveModel

Remarkable ActiveRecord: collection of matchers and macros with I18n for ActiveRecord

Remarkable Rails: collection of matchers and macros with I18n for Rails

With caching, selector for IPv4/IPv6, and many other features

A simple, usable binding to the Salesforce API.

RinRuby is a Ruby library that integrates the R interpreter in Ruby, making R's statistical routines and graphics available within Ruby. The library consists of a single Ruby script that is simple to install and does not require any special compilation or installation of R. Since the library is 100% pure Ruby, it works on a variety of operating systems, Ruby implementations, and versions of R. RinRuby's methods are simple, making for readable code. The {website [rinruby.ddahl.org]}[http://rinruby.ddahl.org] describes RinRuby usage, provides comprehensive documentation, gives several examples, and discusses RinRuby's implementation.

RModBus - free implementation of protocol ModBus