Sinatra-bootstrap is a project mainly written in Ruby, it's free.
A starting point for Sinatra apps
This is a minimal bootstrap allowing for faster Sinatra-based development.
It's inspired by Adam Stacoviak's sinatra-bootstrap, but far more minimal.
Copyright (c) 2011 Rafał Hirsz
Inspired by Adam Stacoviak's sinatra-bootstrap.
Licensed under the WTFPL.