How it works and what's inside:

- Ruby on Rails app with embedded frontend (admin section) based on Angular.js

- Recommended DB - PostgreSQL

- In admin section there's templating language called Liquor (very similar to Liquid)

- Very minimal "core" - Templates, Pages, Snippets, Assets

- Extendable via Rails Engines

- There are several extensions already written

- The most powerful - KMS Models (allowing to define custom Models and its fields in admin section, and output it via Liquor)

You can think of it as self-hosted Shopify but for any type of website. :-)