Dia is a gtk+ based diagram creation program released under the GPL license. Dia is a diagram drawing software similar to Visio. It can be used to draw many different kinds of diagrams such as entity relationship diagrams, UML diagrams, flowcharts, network diagrams, simple circuits and much more.

Dia can print diagrams that span multiple pages, export to many formats (EPS, SVG, CGM and PNG), and the ability to use custom shapes created by the user as simple XML descriptions.

The Tools menu simply provides menu access to all of the tools located on the upper area of the main window. Dia supports the Universal Modelling Language (UML) includes all of the static structure diagram elements specified in the UML specifications. The sheet includes, in order, a Class, Template Class, Note, Dependency, Realization

Dia for Windows can be downloaded from http://dia-installer.sourceforge.net/download.php. To install Dia on Windows, it needs the GTK+ Runtime Enviroment version 2.6 or higher. GTK+ Runtime Environment 2.8 is available from gimp-win.sourceforge.net or download here.

For more information on Dia for Windows version,visit http://dia-installer.sourceforge.net/