By default, Rails includes Prototype and Scriptaculous javascript libraries. It may happen that you may prefer jQuery. There is nothing impossible with rails.
Tag: rails
Ruby on Rails Support languages with Tolk
Tolk is the Rails plugin which allows you to support more than one language for you application easily, as long as your Rails application is running on Rails framework 2.3 version.
DrX – visual inspector of Ruby on Rails Object Models
When it comes to examining an object in Ruby, developer has several handy tools. He may use Object#inspect, p, or one of the Rails plugin that prints Ruby objects, michaeldv’s awesome_print for example. If that is not enough for you you may try DrX.