Diagram Designer
Introduction
A simple, but powerful, vector graphics editor for creating flowcharts, UML class diagrams, illustrations and slide shows.
It’s a Freeware for Windows.
You can download it from http://meesoft.logicnet.dk/DiagramDesigner/
A little skill
When you want to export a flowchart to a PNG file, it’s better to choose “Crop to page contents” option in the export Dialog.
This article is released under CC BY-NC-SA 3.0 license.