OpenFOAM
OpenFOAM: A free, extensible CFD toolbox for advanced fluid-flow simulation and research. Ranked #4 of 89 in Physics Simulation Software by our editors (9.0/10); pricing: Free plan; best for advanced computational fluid dynamics.
At a glance
- Editor score9.0 / 10
- PricingFree plan
- Best forAdvanced computational fluid dynamics
- Free planYes
- Paid fromFree
- Delivery modeDesktop
- Founded2004 · Bracknell, Berkshire, UK
- Facts checked21 Sep 2026
Where it wins
- Turbulence, multiphase-flow, heat-transfer and fluid-flow solvers
- Native meshing plus MPI-based parallel simulation workflows
- ParaView visualization with VTK and EnSight export support
Where it doesn't
- Primarily focused on fluid simulation rather than broad physics domains
- Text-based case dictionaries require a technical configuration workflow
- Source-code extensibility may demand programming expertise
Our verdict on OpenFOAM
OpenFOAM is a freely available, open-source computational fluid dynamics toolbox for engineering, scientific research and education. It provides solvers and utilities for fluid flow, turbulence, multiphase flow, heat transfer, mesh generation, parallel computing and post-processing. The software is distributed as source code and binaries for Linux, Windows and macOS, making it suitable for teams that need desktop-based CFD without a conventional subscription model. Its strongest fit is advanced users working on fluid-focused simulation rather than users seeking a general-purpose physics platform.
Its technical depth is concentrated in CFD workflows. Turbulence modelling includes RAS, DES and LES, while multiphase-flow workflows support more involved fluid-simulation scenarios. Native mesh-generation tools, domain decomposition and MPI workflows support parallel simulation, and runtime or post-processing function objects provide additional control over case execution and analysis. ParaView-based visualization, along with VTK, EnSight and other export formats, supports downstream inspection and data exchange. Integration points include ParaView, Fluent, EnSight and Docker.
OpenFOAM’s free and open-source model removes subscription pricing and allows users to extend the software through source code. That flexibility comes with a configuration-oriented workflow based on text dictionaries, so it is better suited to technically experienced teams than to users seeking a guided visual setup. Its focus also remains primarily fluid simulation, which narrows its fit compared with broader physics environments. Choose OpenFOAM for deep, configurable CFD across Linux, Windows or macOS; consider an alternative if you need a wider range of physics domains or a less code-oriented experience.
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OpenFOAM pricing
OpenFOAM fact sheet
| Free plan | Yes |
|---|---|
| Paid from | Free |
| Delivery mode | Desktop |
| Lesson library | Not verified |
| Authoring tools | Not verified |
| Assessment tools | Not verified |
| 3D visuals | Yes |
| Offline access | Not verified |
| Data export | Yes |
| Deployment | Self-hosted, Desktop |
| Platforms | Windows, macOS, Linux |
| Support | Community, Docs |
| Built for | Small business, Mid-market, Enterprise (editorial estimate) |
| Integrations | 4 integrations: ParaView, Fluent, EnSight, Docker |
| Pricing | Free plan |
| Website | openfoam.com |
| Facts checked | 21 Sep 2026 |
OpenFOAM integrations
OpenFOAM lists 4 integrations on its own site.
- ParaView
- Fluent
- EnSight
- Docker
Alternatives to OpenFOAM
- COMSOL MultiphysicsA broad desktop environment for coupled physics, engineering models, and custom simulation apps.9.4
- Ansys FluentA deep CFD and HPC environment for demanding industrial simulation work.9.3
- SimScaleA broad browser-based multiphysics platform with flexible cloud workflows and tiered access.9.1
See all OpenFOAM alternatives →
OpenFOAM vs the competition
- OpenFOAM vs COMSOL Multiphysics
- OpenFOAM vs Ansys Fluent
- OpenFOAM vs SimScale
- OpenFOAM vs OpenSim
- OpenFOAM vs ngspice
- OpenFOAM vs Xcos
Compare OpenFOAM with any tool side by side →
Also Ranked In
OpenFOAM is ranked in 3 of our directories.
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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