Sinatra Basis is a starter app for Sinatra. It was build for my personal projects and keeps evolving along with my needs, thus, consider it heavily work in progress
At the moment out of the box it supports Asset Pipeline (via sinatra-asset-pipeline gem), ORM (via data_mapper gem), I18n (via I18n gem), SASS, Coffee Script.
It has a some predefined rake tasks including tests and interactive console via tux gem.
Check the Gemfile to see what else it has to offer.
Clone or download the repo. CD into it and run bundle install. Run the server with shotgun. enjoy!