Dia is a gtk+ based diagram creation program released under the GPL license.Dia is inspired by the commercial Windows program 'Visio', though more geared towards informal diagrams for casual use. It can be used to draw many different kinds of diagrams. It currently has special objects to help draw entity relationship diagrams, UML diagrams, flowcharts, network diagrams, and many other diagrams. It is also possible to add support for new shapes by writing simple XML files, using a subset of SVG to draw the shape.
It can load and save diagrams to a custom XML format (gzipped by default, to save space), can export diagrams to a number of formats, including EPS, SVG, XFIG, WMF and PNG, and can print diagrams (including ones that span multiple pages).
I feel Dia is in a state where it can be actively used. Many features are implemented and the code is quite solid and mature. Please try it out and tell me what you think of it. If you find any bugs, please report them with Gnome Bugzilla. Check out the code too, you might even want to contribute...
Included Samples
The following images are generated from diagrams included with the Dia distribution.
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Click on the eye icon to see larger versions of the different windows. Here is a full screen screenshot of Dia in action too.
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Sources
 | The latest bleeding edge version can be found in the Gnome SVN tree. |
| version 0.96.1 (29/3 2007) |
| version 0.95.1 (26/5 2006) |
| version 0.94 (19/8 2004) |
| version 0.93 (1/5 2004) |
| version 0.92.2 (1/11 2003) |
| version 0.91 (14/3 2003) |
| version 0.90 (1/6 2002) |
| version 0.88.1 (12/5 2001) |
| version 0.86 (6/8 2000) |
| version 0.85 |
| version 0.84 |
| version 0.83 |
| version 0.82 |
| version 0.81 |
| version 0.80 |
| version 0.41 |
| version 0.40 |
| version 0.30 |
| version 0.20 |
| Version 0.12 |
| Version 0.11 |
| Version 0. |
Binaries
| Debian packages of Dia (latest version) |
| Up to date RPMs for various distributions can be found at Ximian. Up to date packages can also be generated from the source by running "rpmbuild -ta dia-*.tar.gz". |
| The dia installer for Win32. A dia version for Windows. |
| Irix 6.5 binaries of Dia 0.80 |
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