Ruby IDEs

RubyMine (by JetBrains)
https://www.jetbrains.com/ruby/

Ruby MQTT Resources

Pure Ruby Gem
https://github.com/njh/ruby-mqtt

https://rubygems.org/gems/mqtt

http://www.rubydoc.info/gems/mqtt/frames  (better doc presentation)

Install: gem install mqtt

Capybara - (Ruby Library)

Capybara (Ruby Library) -- Something to look into:

http://jnicklas.github.io/capybara/

SitePrism -- is used to supply a Page Object Model that can be used with Capybara.

https://github.com/natritmeyer/site_prism