FeenoX

At a glance

• Editor score
  7.6 / 10
• Pricing
  Free plan
• Best for
  Engineers needing scriptable open FEM/PDE solving
• Free plan
  Yes
• Paid from
  Free
• Delivery mode
  Desktop
• Facts checked
  24 Sep 2026

• Where it wins

  • Solves steady-state and transient FEM/PDE problems
  • Covers thermal, structural, electromagnetic and neutron analyses
  • Scriptable command-line workflows integrate with Gmsh and ParaView

• Where it doesn't

  • Command-line workflow has no graphical interface
  • Numerical results rely on external post-processing
  • Support is listed through documentation

Our verdict on FeenoX

FeenoX is an open-source desktop engineering simulation program from Seamplex for engineers who define models and boundary conditions in text files. It solves finite-element and other partial-differential-equation problems, making it suited to local or automated analysis workflows rather than hosted classroom use. Its scope includes thermal and structural engineering, electromagnetic analysis and neutron transport, with both steady-state and transient studies. It runs on Windows, macOS and Linux, and is available as desktop software or for self-hosting.

The text-based workflow is central to FeenoX’s fit. Scriptable command-line execution supports automated studies, while numerical output can be passed to external post-processing tools. Gmsh and ParaView are the named integrations, fitting projects that use separate tools for meshing and visualization. This approach can suit engineers who value repeatable inputs and can work with command-line tools; it is less appropriate for people seeking a graphical modeling and analysis environment within one application. The published product details also identify authoring tools, 3D visuals, offline access and data export.

FeenoX is open source and has a free plan, rather than a hosted subscription model. That makes it a candidate for individuals and organizations across the listed size ranges, but users should be comfortable managing a desktop or self-hosted workflow. Documentation is the stated support channel, so teams that require other listed support routes may prefer a product with those options. Choose FeenoX for scriptable, cross-platform FEM/PDE work and external-tool workflows; look elsewhere if an integrated graphical interface or support beyond documentation is essential. Its broad analysis domains are the draw, while its command-line orientation is the main trade-off.

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FeenoX pricing

FeenoX fact sheet

FeenoX integrations

FeenoX lists 2 integrations on its own site.

• Gmsh
• ParaView

Alternatives to FeenoX

• COMSOL MultiphysicsA broad desktop environment for coupled physics, engineering models, and custom simulation apps.9.4
• AFAnsys 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 FeenoX alternatives →

Featured on iTechGuides

FeenoX is listed in our Physics Simulation Software directory. Add the badge to your site — it links back to this page.

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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

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Last updated 7 Oct 2026 · How we research and update