Bushido

Bushido provides one-click deploy for open-source rails apps to a 'fully-furnished' hosting environment for end-users, and does a revenue-share with the app developer. Each app deployed automatically has incoming/outgoing email accounts, a MongoDB instance, a Postgresql DB instance, a provisioned subdomain, etc. Apps generally support several dozen to hundred users, but can be configured for public-facing sites as well. Bushido builds on the cloud services out there and unifies all the different API's into a single, simple interface that standardizes app development - as is the rails way.