Torquebox (http://www.torquebox.org) is a JBoss Application Server that will run your Rack and Rails apps in JRuby. Torquebox provides a number of additional functionality that you might find useful, such as messaging, background services, and scheduled tasks. Configuring those is incredibly easy, since they all rely on simple YAML file configs. This CLI application simplifies that further by lettnig you generate your applications and application templates with simple command line executions.
Gemfile gem 'tb-cli', '~> 0.1.0'
install gem install tb-cli