yEd - Graph Editor
yEd is a powerful desktop application that can be used to quickly and effectively generate high-quality diagrams.
Create diagrams manually, or import your external data for analysis. Our automatic layout algorithms arrange even large data sets with just the press of a button.
yEd is freely available and runs on all major platforms: Windows, Unix/Linux, and Mac OS X.
Thu Oct 16 17:08:33 2014 - permalink -
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http://www.yworks.com/en/products/yfiles/yed/