The 14 most important Ruby Resources
The most important resources for Ruby programmers.
Gems are 3rd-party libraries for Ruby. rubygems.org hold the information about them.
www.rubydoc.info holds documentation of Gems, the 3rd party Ruby libraries.
learnrubythehardway.org an online book to learn Ruby.
tryruby a web-based editor to try the basics of Ruby.
railscasts.com holds lot of screencasts about Ruby on Rails. Many can be watched free of charge. For some you need to pay. The production of new episodes has stopped in June 2013.
rubytapas.com a subscription only series of screencasts (2 every week) about programming in Ruby.
Sinatra is a light-weight route-based web framework for Ruby.
Ruby on Rails
Ruby on Rails (aka ROR) is the most popular web framework for Ruby.
www.railstutorial.org is a tutorial for Ruby on Rails.
Ruby Weekly newsletter a weekly e-mail newsletter about Ruby.
rubyinside.com Ruby news on the web. (Stopped in October 2014.)
apidock.com www.ruby-toolbox.com rvm.io www.relishapp.com bundler.io rubymonk.com www.railstips.org www.rubyflow.com practicingruby.com railsapps.org www.padrinorb.com rubykoans.com opalrb.org afreshcup.com www.hackety.com lotusrb.org pakyow.com ramaze.net rubyshow.com