FEATool Multiphysics vs Step
FEATool Multiphysics
featool.comStep
apps.kde.orgSide by side
| Figure | FEATool Multiphysics | Step |
|---|---|---|
| Price from | — | Free |
| Free plan | — | Yes |
| Free trial | Yes | — |
| Open source | — | — |
| Windows | Yes | — |
| macOS | Yes | — |
| Linux | Yes | Yes |
| Plans published | 3 | 1 |
| Spec score · Physics Simulation Software | 8.6 (#10) | 8.2 (#22) |
| Authoring tools | Yes | Yes |
| Delivery mode | desktop | desktop |
| Free plan | No | Yes |
| Lesson library | Yes | Yes |
| Purpose | FEATool Multiphysics is an engineering simulation toolbox for modeling and solving physics problems. | Step is an interactive physical simulator for exploring the physical world through simulations. |
| Support | Limited free help is available through the public community forum, with dedicated developer support available as an add-on. | Help is available through the Step Handbook, KDE forum, the kde-edu mailing list, and the #kde-edu Libera.chat channel. |
| 3D visuals | Yes | No |
Plans
FEATool Multiphysics
- Default free trial licenseFree
- 1-Year licensePrice not published
- Perpetual licensePrice not published
In their own words
FEATool Multiphysics
FEATool Multiphysics is desktop software for engineering simulation, with tools to model and solve problems across heat transfer, mass transport, structural mechanics, fluid dynamics, and electromagnetics. Models can be built in 1D, 2D, or 3D, including axisymmetric configurations. Geometry tools support modeling and exchange in STEP, IGES, STL, and OBJ formats; meshes can be generated with built-in tools or Gmsh, Netgen, tetWild, and Triangle. FEATool connects its solvers with OpenFOAM, SU2, FEniCS, and redbKIT workflows. Interface actions map to MATLAB functions, and projects can be saved as MATLAB scripts or exported as Python scripts for FEniCS. Results can be exported to MATLAB, CSV, GMV, and VTK, or as interactive ParaView Glance and Plotly web models. It runs as a standalone app on Windows and Linux, or as a MATLAB toolbox on Windows, Linux, and Intel Mac; no standalone macOS app is available. A limited-functionality trial is offered, with full-feature trials requestable for 30 days.
Step
Step is a free Linux desktop application for exploring physical systems through interactive simulations. Users can change body and force properties while a simulation runs. Supported models include two-dimensional classical mechanics, molecular dynamics, sound waves, and deformable bodies, with particles, damped springs, gravitational and Coulomb forces, rigid bodies, and collision handling. Step calculates unit conversions, expressions, error propagation, and solver error estimates. Explicit and implicit solvers reach 8th order, with optional adaptive timesteps; most require GSL. Graph, meter, and tracer tools visualize results, while a controller changes properties using keyboard shortcuts. Tutorials, example experiments, object information, and an integrated Wikipedia browser provide learning material. More examples can be downloaded through KNewStuff. Expression calculations such as unit conversion require libqalculate. Step is GPL-2.0+ software, and its StepCore library can be used separately. The listed release is Step 26.08.2, released 2026-10-08.