Fairytale is a Ruby static-site compiler designed to work as closely as possible to the process of building a dynamic site. Building with it is designed to closely resemble building with Sinatra:
# mysite.rb
require 'fairytale'
get '/' do
"Hello world!"
end
Install the gem and run with:
gem install fairytale
ruby -rubygems mysite.rb
Compiled files go into the ./webroot directory.
Licensed under MIT, created by Michael Mokrysz. A lot of credit has to go to the Sinatra team.