OpenModelica

Engineering & science

Free open-source softwareEditorial overview
A CLOSER LOOK

What is OpenModelica?

OpenModelica is a modeling and simulation environment based on the Modelica language. It supports equation-based descriptions of physical systems and reusable component models, helping engineers and researchers explore interactions across multiple domains in an open simulation toolchain.

Modelica models

Component diagrams

Simulation

Equation-based modeling

Is it a good fit?

Best suited to

Engineers simulating coupled physical systems

Before you choose

Library compatibility varies. Solvers and initialization require expertise.

Editorial assessment based on the provider’s published information. Our method

Know what you're signing up for.

The Open-source OSMC Public License software is available without a license subscription and includes Modelica models and Component diagrams. This covers the downloadable application, while optional support, third-party services, and separately licensed materials have their own terms.

No software subscription; hardware, support and any separately licensed extras are not included.

Check current official pricing

The useful parts. The trade-offs.

Why consider it

Supports reusable physical-system models

Useful for multi-domain teaching and analysis

What to keep in mind

Library compatibility varies

Solvers and initialization require expertise

How to use it well

Start with a documented library example and reproduce its expected result before modifying parameters. Check units, initial conditions, and component connections carefully when combining domains. Record library versions and solver settings with each model, and compare key outputs against an analytical estimate or measurement before relying on a more complicated simulation.

This is best suited to engineers simulating coupled physical systems. Before committing a larger project, account for these trade-offs: library compatibility varies; solvers and initialization require expertise.

A few things you might be wondering.

Is OpenModelica free?

The Open-source OSMC Public License software is available without a license subscription and includes Modelica models and Component diagrams. This covers the downloadable application, while optional support, third-party services, and separately licensed materials have their own terms.

Is OpenModelica based on the Modelica language?

Yes. Modelica-based modeling is central to the environment.

Will every third-party Modelica library work unchanged?

No. Check compatibility and dependencies for the chosen library and version.

Where can I check the latest prices?

Use the provider link on this page. Billing period, location, team size, promotions, taxes, and optional extras may affect the amount you pay.

How should I compare this tool with alternatives?

Choose tools for the same task, then compare their feature limits, platform support, and total cost for your team. The Compare button helps you keep a shortlist.

Are the user reviews moderated?

Yes. New reviews are submitted for moderation. We show published user reviews separately from the editorial overview and never assign a default user rating.

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