Ruby

General

 * Ruby Home Page
 * Ruby-Doc.org: Help and documentation for the Ruby programming language.
 * RubyForge - software project repository
 * Ruby Central, Inc - a hub for support of Ruby activities
 * Ruby Code & Style
 * JRuby is tightly integrated with Java to allow the embedding of the interpreter into any Java application with full two-way access between the java and the Ruby code.
 * Take a shine to JRuby - from IBM
 * Beginning of JRuby on Rails
 * whytheluckystiff
 * Ruby Forums
 * Ruby Inside - blog
 * why's subversion repo
 * Hpricot - a fast, enjoyable HTML parser for Ruby

Guides

 * RubyBrain - Javascript enhanced Ruby API docs
 * Why's (Poingnant) Guide to Ruby
 * Learn to Program
 * Using MySQL with Ruby
 * Sockets programming in Ruby PDF from IBM
 * Using the Ruby Development Tools plug-in for Eclipse
 * Things That Newcomers to Ruby Should Know
 * try ruby! (in your browser)

Books

 * Programming Ruby: The Pragmatic Programmer's Guide - ebook (first edition)
 * Programming Ruby (2nd. Ed.)

Rails

 * Ruby on Rails:
 * Wiki
 * Blog
 * Documentation for Ruby on Rails
 * Screencasts
 * API - Rails Framework Documentation
 * RailsBrain - Javascript enhanced Rails API docs
 * Ruby on Rails API - PHP.net style documentation for Rails
 * Ruby on Rails on digg
 * Ruby on Rails on technocrati
 * Active Record on slashdot
 * Using Ruby on Rails on Mac OS X
 * Locomotive - a simple tool to help you develop Ruby on Rails applications on Mac OS X
 * Exploring Active Record from IBM
 * Crossing borders: What's the secret sauce in Ruby on Rails? from IBM
 * Rewriting in Rails: a Practical Examination
 * Ruby and Rails notes
 * Railscasts - free RoR screencasts
 * PeepCode screencasts are a high-intensity way to learn Ruby on Rails website development


 * Groups:
 * Working With Rails - discovering the RoR community
 * Greater Boston Ruby and Rails
 * Boston Ruby Group
 * on Google Groups
 * on Working With Rails
 * San Diego Ruby (and Rails) User Group


 * Cheat Sheets:
 * http://www.ilovejackdaniels.com/ruby-on-rails/ruby-on-rails-cheat-sheet/
 * http://www.blainekendall.com/index.php/rubyonrailscheatsheet/


 * Rolling with Ruby on Rails @ onlamp.com: Part 1 and Part 2
 * What Is Ruby on Rails @ onlamp.com
 * Ajax on Rails @ onlamp.com


 * Web 2.0 development using Ruby on Rails MIT IAP 2006 class
 * http://scripts.mit.edu/~deberg/railster/public/bums/list
 * http://scripts.mit.edu/~deberg/railster/public/access/login
 * Introduction to Ruby on Rails MIT IAP 2007 class


 * Ruby on Rails on Red Hat
 * Ruby on Rails Google group - an adhoc and unofficial group for Ruby on Rails (RoR) fans
 * The Rails Way is all about teaching "best practices" in Rails application design
 * Rail Spikes - Ruby on Rails from the trenches

REST

 * REST on Rails
 * The Rails Way - best practices in Rails application design (focusing on REST)
 * Active Resource
 * SignOut Part 1 and Part 2
 * Rails RESTful Resources Tutorial

Tools

 * RadRails - A Ruby on Rails IDE (built on the Eclipse RCP)
 * RadRails wiki
 * Ruby Editor Plugin for jEdit
 * RubyGems package system
 * Capistrano is a utility which may be used to automate the deployment of Rails applications
 * Capistrano: Automating Application Deployment - book
 * BioRuby aims to implement an integrated environment for Bioinformatics with Ruby language
 * Crypt library is a pure-ruby implementation of a number of popular encryption algorithms
 * libgnupg-ruby is a "wrapper" library for the gpg binary
 * Camping is a small web framework
 * Ruby Rails Emacs package - a bunch of modes to help you be more productive when you are coding Ruby
 * Mongrel is a fast HTTP library and server for Ruby that is intended for hosting Ruby web applications of any kind using plain HTTP rather than FastCGI or SCGI

Miscellaneous

 * RubyConf 2006 - October 20-22, 2006 in Denver, CO
 * Ruby interactive: in-browser demo
 * Jamis Buck's blog
 * sd.rb podcast - presentations by San Diego Ruby Users Group