Location: United States, Chapel Hill, NC
MultiRails allows easy testing against multiple versions of Rails for your Rails specific gem or plugin.
Use MultiRails to hook in Rails 2.0 testing in your continuous integration. Still working on Rails 2.0 support? Use MultiRails to see where your test suite falls down against the 2.0 preview releases of Rails.
Homepage: http://multi-rails.rubyforge.org/