http://ec2onrails.rubyforge.org/http://ec2onrails.rubyforge.org/

http://www.zabada.com/tutorials/deploying-a-rails-application-to-production-on-amazon-ec2.php

http://pauldowman.com/projects/ruby-on-rails-ec2/

http://davidcancel.com/rubber-complex-multi-instance-rails-ec2-deployments/

http://auser.github.com/poolparty/

http://wiki.opscode.com/display/chef/Home

http://wiki.github.com/wr0ngway/rubber/