OpenModelica is a free and open source environment based on the Modelica modeling language for modeling, simulating, optimizing and analyzing complex dynamic systems. This software is actively developed by Open Source Modelica Consortium, a non-profit, non-governmental organization. The Open Source Modelica Consortium is run as a project of RISE SICS East AB in collaboration with Linköping University.
OpenModelica is used in academic and industrial environments. Industrial applications include the use of OpenModelica along with proprietary software in the fields of power plant optimization, automotive and water treatment.
OpenModelica Compiler (OMC) is a Modelica compiler, translating Modelica to C code, with a symbol table containing definitions of classes, functions, and variables. Such definitions can be predefined, user-defined, or obtained from libraries. The compiler also includes a Modelica interpreter for interactive usage and constant expression evaluation. The subsystem also includes facilities for building simulation executables linked with selected numerical ODE or DAE solvers. The OMC is written in MetaModelica, a unified equation-based semantical and mathematical modeling language and is bootstrapped.
What is OpenModelica?
OpenModelica is an open-source 3d & cad program for Windows from Open Source Modelica Consortium (OSMC) and Linköping University (LiU).. It ranks 11th by popularity among 3d & cad in this catalogue. It is written in C.
Installation and requirements
Official installers exist for 64-bit as EXE (NSIS). Installation asks for administrator rights. The installer supports unattended (silent) installation.
Popularity and file types
The Chocolatey package has been downloaded 8,386 times. The source code on GitHub (OpenModelica/OpenModelica) has 1,452 stars. Wikipedia has an article about it in 5 of our languages. Similar programs include PrusaSlicer, MeshLab and Ultimaker Cura.
Project description on GitHub: “OpenModelica is an open-source Modelica-based modeling and simulation environment intended for industrial and academic usage.”
Pros / Cons
Pros
- Open source: the code can be inspected and built by anyone
- Documented silent install
Cons
- No native ARM64 build
- Installation needs administrator rights
In short: OpenModelica is an open-source 3d & cad tool for 64-bit PCs. Administrators can deploy it unattended.
Is OpenModelica safe to download?
- The file is served by build.openmodelica.org, the publisher’s own domain
- The download link uses HTTPS
- A SHA256 hash is published, so you can verify the file:
373CB4A0CE2AE9DF9D3C4E83963A268D179F0CD06DDD90FE0E9D5D5F17E0B126· 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
Recent versions
All 1 versions ›| Version | Date | Size | Files |
|---|---|---|---|
| 1.26.3Latest | March 25, 2026 | — | 64-bit EXE (NSIS) |
Install from the command line
Silent install ›winget install --id OpenModelica.OpenModelica.Official -echoco install openmodelica -yOpenModelica-v1.26.3-64bit.exe /SRelated guide: How to use winget: install and update apps
Information
- Publisher
- Open Source Modelica Consortium (OSMC) and Linköping University (LiU).
- Category
- 3D & CAD
- Licence
- Dual License (AGPL-3.0 or OSMC-PL-1.8)
- Price
- Free
- Source code
- github.com/OpenModelica/OpenModelica
- Written in
- C
- Requires
- Windows 11 / 10
- Architecture
- 64-bit
- Installer
- EXE (NSIS)
- Version
- 1.26.3
- Released
- March 25, 2026
- Added to the catalogue
- April 27, 2026
- Versions listed
- 1
- Chocolatey downloads
- 8,386
- GitHub stars
- 1,452
- GitHub forks
- 408
- Website
- openmodelica.org
- winget ID
- OpenModelica.OpenModelica.Official
- Chocolatey package
- openmodelica
Ratings and reviews
No reviews yet. Be the first to rate it.
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Frequently asked questions
Is OpenModelica free?
Yes. OpenModelica is open-source software under the Dual License (AGPL-3.0 or OSMC-PL-1.8) licence.
Is OpenModelica safe to download?
The download comes from build.openmodelica.org, 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 OpenModelica 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 OpenModelica be installed silently?
Yes. The silent install page lists the exact command for each installer.
Does OpenModelica run on ARM (Windows on Arm)?
There is no ARM64 build; Windows 11 on Arm can run the 64-bit version through emulation.
What are alternatives to OpenModelica?
PrusaSlicer, MeshLab, Ultimaker Cura, NetLogo and OpenToonz. The alternatives page compares them.
