Frappe, pronounced fra-pay, is a full stack, batteries-included, web framework written in Python and Javascript with MariaDB as the database. It is the framework which powers ERPNext. It is pretty generic and can be used to build database driven apps.
The key difference in Frappe compared to other frameworks is that meta-data is also treated as data and is used to build front-ends very easily. We believe in a monolithic architecture, so Frappe comes with almost everything you need to build a modern web application. It has a full featured Admin UI called the Desk that handles forms, navigation, lists, menus, permissions, file attachment and much more out of the box.
Frappe is MIT Licensed and is hosted on GitHub.