Welcome to Dia's homepage. Dia is a GTK+ based diagram creation program for GNU/Linux, MacOS X, Unix, and Windows, and is released under the GPL license. News! 2011-Dec-18: Version 0.97.2 has been released. Visit the Download page to get your copy! (Download shortcuts: Windows,Mac OS X) Dia is roughly inspired by the commercial Windows program 'Visio,' though more geared towards informal diagrams