<p>I have to do some work for college and my professor likes to torture us with Nassi-Shneiderman diagrams. </p>

<p>Has anyone a good editor/graphcial tool to draw these? Requirements:</p>

<ul>
<li>cross platform (or able to run within wine)</li>
<li>open source (or a least free to for private use)</li>
</ul>

<p>--</p>

<p>After considering some editors, I ended up by using Strutorizer from <a href="http://structorizer.fisch.lu/" rel="nofollow noreferrer">http://structorizer.fisch.lu/</a></p>

<p>It hasn't the best usability but it's good enough. And it's written in Java.</p>

You can download a free trial copy of
SmartDraw
, which can edit Nassi-Schneiderman diagrams, or there's the free
Nassi-Shneiderman Diagram-Editor
.
EDIT:
How to draw Nassi-Shneiderman diagrams with SmartDraw