Palabos

Free#16 of 22 in CFD software

Open-source lattice Boltzmann framework for computational fluid dynamics.

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At a glance

Editor score
Not yet scored
Pricing
Free plan
Best for
Developers using lattice-Boltzmann CFD
Free plan
Yes
Paid from
None
Deployment
Desktop
Facts checked
24 Sep 2026

Where it wins
- C++, Python, and Java interfaces support custom simulation development.
- MPI execution and multiblock structures support parallel computation.
- Multiphase models and grid refinement extend simulation capabilities.
Where it doesn't
- No graphical user interface; using Palabos requires programming.
- No built-in meshing is provided.
- Its scope is narrower than general-purpose CFD software.

Our verdict on Palabos

Palabos is an open-source C++ framework for computational fluid dynamics based on the lattice Boltzmann method. It is intended for scientists and engineers with CFD backgrounds who need to develop fluid-flow simulations or custom lattice Boltzmann models. The software is self-hosted and runs on Linux, Windows, and macOS desktops. Interfaces for Python and Java support prototyping and application development alongside the core C++ programming interface.

Palabos is free to use and distributed under the AGPLv3 license, with no paid tiers described. Its technical feature set centers on lattice-Boltzmann computation: MPI-based execution supports distributed- and shared-memory parallelism, while multiblock data structures address parallelization. Multiphase models and grid refinement add scope for specialized simulations. The published platform details identify desktop deployment and no built-in meshing, so users should plan their surrounding workflow accordingly.

The main trade-off is its code-first experience. Palabos has no graphical user interface, and setup involves programming rather than visual model construction. Support is provided through documentation and community channels. Developers who specifically want lattice-Boltzmann methods, programmable interfaces, and parallel execution should find the framework aligned with that workflow. Teams seeking a broad general-purpose CFD environment, integrated meshing, or a graphical interface should consider an alternative with those capabilities.

Palabos pricing

Plans Free planFree Free to use — no paid tier required for the core job.

See plans on palabos.unige.ch

Palabos fact sheet

Free plan	Yes
Paid from	None
Deployment	Desktop
Multiphysics solver	Not verified
Built-in meshing	No
CAD import	Not verified
Parallel cores	Not verified
Operating systems	Linux, Windows, macOS
Deployment	Self-hosted
Platforms	Linux, Windows, macOS
Support	Community, Docs
Built for	Small business, Mid-market, Enterprise (editorial estimate)
Pricing	Free plan
Website	palabos.unige.ch
Facts checked	24 Sep 2026

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Reviewed by iTechGuides Editors · Editorial team · Updated Sep 2026

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