Draw Flowcharts, UML/Network Diagrams Using Dia
Whether you are a software developer or a network analyst, or just a student who regularly needs to create flowcharts, UML diagrams etc, you may already be looking for a freeware alternatives for Microsoft Visio, which is an expensive software.
Here is Dia, an open source application that gives you most of the features and abilities of Microsoft Visio, free of cost. With Dia, you can draw many different kinds of diagrams, including flowcharts, network diagrams, UML charts, entity relationship diagrams, and so on. It consists of a library of pre-defined shapes and objects, which you can use as building blocks for your end diagram.
You can also create your own shapes and objects by defining them in an XML file. Once the drawing is done, you can export and save it in a variety of formats, including EPS, SVG, XFIG, WMF, and PNG.

Works with Windows (7/Vista/XP), Linux

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