Application framework based on Jquery.

Yes, based on Jquerie's widgets.

Every installable component is not more then a jquery widget. The benefit is that there is no deep study of yet another framework. Jquery widgets are well documented. Jquery website about widgets

Inside the widget, winnies core functionality can be used. Altering the file system for example.

A minimum 'app' consists of three files:

index.js

Hold the widget javascript.

install.json

Describes how this is installed and the name and location of other files this app depends on.

template.html

Just some html to use in your app.