Pencil
A desktop tool for GUI mockups and diagrams, with built-in shape collections and export to PNG, PDF and HTML.GetGPL-2.0
Gaphor
A UML and SysML modeling application that keeps a real model behind its diagrams, not just drawings.
Apache-2.0 · Downloads from gaphor.org
- License
- Apache-2.0
- Open source
- Source
- GitHub
- gaphor
- Verified
- 2026
About Gaphor
Gaphor is a modeling tool for UML and SysML. Elements placed on a diagram belong to an underlying UML 2 data model, so the same class or block can appear in several views and stay consistent, which makes it suitable for complete system models as well as quick sketches.
The interface is built with GTK, and models can also be scripted from Python or Jupyter notebooks. Releases provide separate macOS disk images for Apple silicon and Intel, alongside Windows and Linux builds. The project is Apache-2.0; its REUSE metadata lists a few files under other notices.
Information
- Source code
- gaphor/gaphor
- License
- Apache-2.0
- Website
- gaphor.org
- Download
- gaphor.org
- Category
- Developer tools
- Evidence checked
- Tags
Maco links to each project’s official download. Check its release notes for macOS version and Apple silicon support. The verification date records our license and source review, not a security audit.
Sources and image credits
- github.com/gaphor/gaphor
- github.com/gaphor/gaphor/blob/main/LICENSES/Apache-2.0.txt
- github.com/gaphor/gaphor/blob/main/REUSE.toml
- github.com/gaphor/gaphor/releases
- formulae.brew.sh/cask/gaphor
- icon.png: The Gaphor Development Team. Apache-2.0; upstream project icon, trademarks retained.
License and artwork notices
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