Gaphor

Gaphor is a UML, SysML, RAAML, and C4 modeling application.

Modelling software · by Arjan Molenaar · gaphor.org

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What Gaphor’s own pages say

What it says it doesGaphor is a UML, SysML, RAAML, and C4 modeling application. gaphor.org
PlatformsLinux, Windows, macOS gaphor.org
Open sourceYes gaphor.org
Licenseavailable under a friendly Apache 2 license gaphor.org
Models supportedC4, RAAML, SysML, UML gaphor.org

Each value is a quote AirStack found on the product’s own pages, read 2026-11-05. A missing field means AirStack has not found it on its pages.