Bad news. The server hosting The Ruby Toolbox went bust on the evening of June 7th. While I do have backups, the
original source code is in a very outdated state so I currently don't feel it makes sense to try and get it running again.
For the time being, here is a very stripped down version of the Ruby Toolbox's contents.
Infinity Test is a continuous testing library and a flexible alternative to Autotest, using Watchr library with RSpec, Test::Unit or Bacon with RVM funcionality, giving the possibility to test with all Rubies that you have in your RVM configuration.