Dia is a diagram and graph drawing application, originally based on Microsoft Visio, that makes it easy to draw flow charts, graphs and other diagrams.
Dia comes with a number of predefined shapes, making it extremely simple to draw anything from a basic graph to a network diagram, entity relationship diagram, flowchart or UML diagram.


Dia and export diagrams to lots of formats, including:
* EPS
* SVG
* XFIG
* WMF
* PNG
* PDF