Dia diagram editor Alternatives (January 2026)

Dia draws your structured diagrams: Free Windows, Mac OS X and Linux version of the popular open source program

Dia is free (open source) drawing software. Sketch your favorite structured diagrams! Windows version available as a free download.

4.3/5

43+ reviews

Reviewed on:

Capterra

Draw Freely | Inkscape

https://inkscap

.org/

Inkscape is professional quality vector graphics software which runs on Linux, Mac OS X and Windows desktop computers.

Sweet Home 3D - Draw floor plans and arrange furniture freely

http://www.sweethome3

.com/

Free interior design software. Draw the plan of your home or office, test furniture layouts and visit the results in 3D.

ChemDoodle | Chemical Drawing Software

https://www.chemdoodl

.com/

Chemical drawing and publishing software for Windows, macOS and Linux. Affordable and used by thousands of scientists around the world. Free trial available for immediate download.

Krita | Digital Painting. Creative Freedom.

https://krit

.org/en/

Krita is a professional FREE and open source painting program. It is made by artists that want to see affordable art tools for everyone.

MyDraw - Advanced Diagram and Flowchart Software

https://www.mydra

.com/

MyDraw is an advanced diagramming software for drawing flowcharts, org charts, mind maps, network diagrams, floor plans, and business diagrams.

FreeCAD: Your own 3D parametric modeler

https://www.freeca

.org/

FreeCAD, the open source 3D parametric modeler

Mantis Bug Tracker

https://www.mantisb

.org/

MantisBT is a popular free web-based bug tracking system. It is written in PHP works with MySQL, MS SQL, and PostgreSQL databases. MantisBT has been installed on Windows, Linux, Mac OS, OS/2, and others. It is released under the terms of the GNU General Public License (GPL).

pgAdmin - PostgreSQL Tools

https://www.pgadmi

.org/

pgAdmin - PostgreSQL Tools for Windows, Mac, Linux and the Web

Sylpheed - 軽快で使いやすいオープンソースのメールソフト

https://sylpheed.sraos

.jp/

Sylpheed - Sylpheed はシンプル、軽量かつ高機能で使いやすい、無料のメールソフトです。Sylpheed は Windows から Linux まで様々なプラットフォームに対応しています。