Capistrano (formally SwitchTower)

For my production deployment, I am using Capistrano.

It was a pain to set it up initially. But once I got it working, it was so pleasant to work with.

If you are planning to deploy a rails application, you should definitely checkout Capistrano.

More info:

• http://wiki.dreamhost.com/index.php/Ruby_on_Rails:Capistrano
• http://nubyonrails.com/pages/shovel_dreamhost
  
• http://manuals.rubyonrails.com/read/book/17