dia

v 0.98.0-2026-04-25 Updated: 1 week, 1 day ago

A diagram creation program.

Dia is a GTK+ based diagram creation program and is roughly 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 and 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.

https://gitlab.gnome.org/GNOME/dia

To install dia, paste this into the macOS Terminal after installing MacPorts

sudo port install dia

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