Tool to draw software architecture [closed]

Question

Does someone know if there exist some free software that will allow me to easily draw software architecture?

I DON'T mean UML, workflow, diagram, or other technical stuff BUT "presentation-oriented" drawing, like this.

Thanks you.

Answer 1

Hope this helps, I found that one, while looking for free alternatives to MS Visio.

Here the source (which also comes among the first results in a google search for free alternative to Visio)