Based on Silex, it integrates RedBean for model handling and has got some nifty things on the frontend side too, using Gulp for asset management.
It is available via Composer and can be installed and started through the command line like this :
composer create-project neemzy/patchwork pizza
Find out more and contribute at GitHub, and spread the word !
Incidentally, Patchwork uses my RedBean service provider for Silex.