Gaphor is a UML and SysML modeling application written in Python.
It is designed to be easy to use, while still being powerful.
Gaphor implements a fully-compliant UML 2 data model, so it is much more than a picture drawing tool.
You can use Gaphor to quickly visualize different aspects of a system as well as create complete, highly complex models.
Publisher’s description
What is Gaphor?
Gaphor by Gaphor Community is open-source Windows software in the 3d & cad category. It ranks 34th by popularity among 3d & cad in this catalogue. It is written in Python. Besides Windows, it is available for Linux.
Installation and requirements
The publisher provides EXE (NSIS) installers for 64-bit Windows. A silent install is possible with the installer’s documented switches.
Updates and version history
The current version is 3.3.2, released on May 2, 2026. The version history goes back to April 10, 2023: 24 releases, all linked to the official files. That is about 7.8 releases a year.
Popularity and file types
The Chocolatey package has been downloaded 28 times. The source code on GitHub (gaphor/gaphor) has 2,282 stars. Similar programs include PrusaSlicer, MeshLab and Ultimaker Cura.
Project description on GitHub: “Gaphor is the simple modeling tool”
Pros / Cons
Pros
- Open source: the code can be inspected and built by anyone
- Documented silent install
- Frequent updates (about 7.8 a year)
- Also runs on Linux
Cons
- No native ARM64 build
In short: Gaphor is an open-source 3d & cad tool for 64-bit PCs. It is actively maintained. Administrators can deploy it unattended.
Is Gaphor safe to download?
- The file is served by github.com, the publisher’s own domain
- The download link uses HTTPS
- A SHA256 hash is published, so you can verify the file:
EFDFD54055FB9405FD33D0F2124568011A9DCC62B1D93D755977DCBD27D5D344· Open the VirusTotal report for this hash - The link has not been checked yet
- The source code is public
- ExeAtlas does not host, wrap or modify installers
Related guide: How to check a file’s SHA256 hash on Windows
Security practices (OpenSSF Scorecard)
Automated checks of the gaphor/gaphor repository on GitHub by the Open Source Security Foundation, last run on October 23, 2026.
- Dependency update tool10
- Actively maintained10
- No dangerous workflows10
- Security policy10
- Restricted token permissions10
- No binaries in the repository10
- No known vulnerabilities10
- Static code analysis10
- Published packages10
- Licence declared10
- Tests in CI10
- Contributors from several organisations10
- Pinned dependencies8
- Code review6
- OpenSSF Best Practices badge5
- Fuzzing0
- Signed releases0
The score rates how the project is developed and released, not whether the program is safe to install. scorecard.dev
Recent versions
All 24 versions ›24 versions over 3 years · about 7.8 a year
| Version | Date | Size | Files |
|---|---|---|---|
| 3.3.2Latest | May 2, 2026 | — | 64-bit EXE (NSIS) |
| 3.3.1 | April 15, 2026 | — | 64-bit EXE (NSIS) |
| 3.3.0 | April 12, 2026 | — | 64-bit EXE (NSIS) |
| 3.2.0 | November 9, 2025 | — | 64-bit EXE (NSIS) |
| 3.1.0 | May 21, 2025 | — | 64-bit EXE (NSIS) |
| 3.0.0 | January 26, 2025 | — | 64-bit EXE (NSIS) |
| 2.27.0 | October 9, 2024 | — | 64-bit EXE (NSIS) |
| 2.26.0 | July 7, 2024 | — | 64-bit EXE (NSIS) |
Install from the command line
Silent install ›winget install --id gaphor.gaphor -echoco install gaphor -ygaphor-3.3.2-installer.exe /SRelated guide: How to use winget: install and update apps
Also for other systems
brew install --cask gaphorflatpak install flathub org.gaphor.GaphorInformation
- Publisher
- Gaphor Community
- Category
- 3D & CAD
- Licence
- Apache-2.0 license
- Price
- Free
- Source code
- github.com/gaphor/gaphor
- Written in
- Python
- Content rating
- All ages
- Requires
- Windows 11 / 10
- Architecture
- 64-bit
- Installer
- EXE (NSIS)
- Other platforms
- Linux
- Version
- 3.3.2
- Released
- May 2, 2026
- Added to the catalogue
- April 10, 2023
- Versions listed
- 24
- Updates / year
- 7.8
- Chocolatey downloads
- 28
- GitHub stars
- 2,282
- GitHub forks
- 242
- Website
- github.com
- winget ID
- gaphor.gaphor
- Chocolatey package
- gaphor
Ratings and reviews
No reviews yet. Be the first to rate it.
Alternatives to Gaphor
See all ›-
Open source82.3K ↓ -
Open source36.1K ↓ -
Open source197.7K ↓ -
Bambu Studio02.08.02.61Bambu Studio is a cutting-edge, feature-rich slicing software. It contains project-based workflows, systematically optimized slicing algorithms, and an easy-to-use graphic interface, bringing users an incredibly smooth printing experience.Open source35K ↓ -
Open source9K ↓ -
Open source640K ↓ -
Open source30.1K ↓ -
OpenModelica1.26.3OpenModelica is an open-source Modelica-based modeling and simulation environment intended for industrial and academic usage.Open source8.4K ↓
Frequently asked questions
Is Gaphor free?
Yes. Gaphor is open-source software under the Apache-2.0 license licence.
Is Gaphor safe to download?
The download comes from github.com, which belongs to the publisher; ExeAtlas does not host or change the file. Compare its SHA256 hash with the one shown here, or open the VirusTotal report for that hash.
How do I install Gaphor with winget?
Open PowerShell or Windows Terminal and run the winget command shown on this page. winget downloads the official installer and checks its SHA256 hash before running it.
Can Gaphor be installed silently?
Yes. The silent install page lists the exact command for each installer.
Does Gaphor run on ARM (Windows on Arm)?
There is no ARM64 build; Windows 11 on Arm can run the 64-bit version through emulation.
Where can I download an older version of Gaphor?
The versions page lists all 24 versions with links to their official installer files, back to April 10, 2023.
What are alternatives to Gaphor?
PrusaSlicer, MeshLab, Ultimaker Cura, Bambu Studio and OpenToonz. The alternatives page compares them.
