Hi! Welcome to Articulate :)
This is a fully functional blog engine supporting many features:
Articulate is open source and hosted on GitHub: https://github.com/Shandem/Articulate/
It comes with 4 themes which have different features enabled. You can easily change themes on the root Articulate node on the style tab. Themes are super easy to create and in fact the 4 themes shipped with Articulate are MIT licensed themes originally built for the Ghost blogging platform.
Comments are powered by Disqus (Google+ or Facebook are also supported and can be enabled in the templates).
Live Writer integration is fully functional, to configure Live Writer just use the URL of the Articulate root node and use your Umbraco username/password.
You can post directly from your mobile (including images and photos). This editor can be found at the path of "/a-new". As an example if Articulate is your root node in Umbraco, then the URL would be: