97 Things Every Programmer Should Know: Collective Wisdom from the Experts

Agile Data

Agile Web Development with Rails (Pragmatic Programmers)

Beginning Rails 3 (Expert's Voice in Web Development)

Beginning Ruby (Expert's Voice in Open Source)

Beginning Ruby on Rails (Wrox Beginning Guides)

Beginning Ruby on Rails E-Commerce: From Novice to Professional

Beginning Ruby: From Novice to Professional, 2nd Edition (Expert's Voice in Open Source)

Best of Ruby Quiz: volume one (Pragmatic Programmers)

Big Data for Chimps

Build Awesome Command-Line Applications in Ruby: Control Your Computer, Simplify Your Life

Build Your Own Ruby on Rails Web Applications

Cloning Internet Applications with Ruby

Continuous Testing: with Ruby, Rails, and JavaScript

Crafting Rails Applications: Expert Practices for Everyday Rails Development (Pragmatic Programmers)

Dependency Injection: With Examples in Java, Ruby, and C#

Deploying Rails: Automate, Deploy, Scale, Maintain, and Sleep at Night (The Facets of Ruby)

Deploying with JRuby: Deliver Scalable Web Apps using the JVM (Pragmatic Programmers)

Design Patterns in Ruby (Addison-Wesley Professional Ruby)

Distributed Programming with Ruby (Addison-Wesley Professional Ruby)

Eloquent Ruby (Addison-Wesley Professional Ruby)

Enterprise Integration: with Ruby (Pragmatic Programmers)

Enterprise Recipes with Ruby and Rails

Everyday Scripting with Ruby: For Teams, Testers, and You

Exploring Everyday Things with R and Ruby

Foundation Rails 2

From Java to Ruby: Things Every Manager Should Know (Pragmatic Programmers)

FXRuby: Create Lean and Mean GUIs with Ruby (Pragmatic Programmers)

HBase in Action

Head First Rails: A learner's companion to Ruby on Rails

IronRuby Unleashed

Learn Ruby the Hard Way

Learn to Program: Using Ruby (Facets of Ruby)

Learning Rails 3

MacRuby in Action

MacRuby: The Definitive Guide: Ruby and Cocoa on OS X

Managing Infrastructure with Puppet

Metaprogramming Ruby: Program Like the Ruby Pros (Facets of Ruby)

Methods in Medical Informatics: Fundamentals of Healthcare Programming in Perl, Python, and Ruby (Chapman & Hall/CRC Mathematical & Computational Biology)

NetBeans Ruby and Rails IDE with JRuby (Firstpress)

PeopleSoft PeopleTools Tips & Techniques (Oracle Press)

Practical JRuby on Rails Web 2.0 Projects: Bringing Ruby on Rails to Java (Practical Projects)

Practical Object Oriented Design in Ruby: An Agile Primer (Addison-Wesley Professional Ruby)

Practical Rails Plug-ins: Build Great Websites Fast (Expert's Voice in Web Development)

Practical Reporting with Ruby and Rails (Expert's Voice in Open Source)

Practical Ruby for System Administration (Expert's Voice in Open Source)

Practical Ruby Projects: Ideas for the Eclectic Programmer (Books for Professionals by Professionals)

Pro Active Record: Databases with Ruby and Rails (Expert's Voice)

Professional Ruby on Rails (Programmer to Programmer)

Programming Cocoa with Ruby: Create Compelling Mac Apps Using RubyCocoa: Bringing Some Ruby Love to OS X Programming (Facets of Ruby)