The Best Physics Simulation Software in 2026
We researched physics simulation software from official websites, including pricing pages, plan tables and product documentation. Products are ranked on their core job, value for money and verified features, helping educators and learners compare tools for exploring motion, forces, energy, electricity and waves.
Our top picks
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Top ranked
COMSOL Multiphysics#1 of 899.4/10A broad desktop environment for coupled physics, engineering models, and custom simulation apps.
Pricing on request
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Runner-up
Ansys Fluent#2 of 899.3/10A deep CFD and HPC environment for demanding industrial simulation work.
Pricing on request · 30-day trial
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Top-ranked free plan
SimScale#3 of 899.1/10A broad browser-based multiphysics platform with flexible cloud workflows and tiered access.
Free plan
Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.
The full ranking 89 tools, best first · page 1 of 2
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Best forEngineering multiphysics and industrial modeling
A broad desktop environment for coupled physics, engineering models, and custom simulation apps.
- Offline access
- Data export
- Lesson library
9.4/10★★★★★Visit COMSOL -
Best forEnterprise CFD and HPC teams
A deep CFD and HPC environment for demanding industrial simulation work.
- Data export
- 3D visuals
Pricing on request · 30-day trial Our Ansys Fluent verdict → Visit Ansys FluentFor vendors Sponsor this spot · #2 · $99/mo →9.3/10★★★★★Visit Ansys Fluent -
Best forTeams wanting cloud multiphysics simulation
A broad browser-based multiphysics platform with flexible cloud workflows and tiered access.
- Data export
- Lesson library
- 3D visuals
9.1/10★★★★★Visit SimScale -
Best forAdvanced computational fluid dynamics
A free, extensible CFD toolbox for advanced fluid-flow simulation and research.
- Data export
- 3D visuals
9.0/10★★★★☆Visit OpenFOAM -
Best forFree musculoskeletal simulation
A free, research-focused toolkit for detailed musculoskeletal simulation and analysis.
- Data export
- Lesson library
- 3D visuals
8.4/10★★★★☆Visit OpenSim -
Best forOpen-source circuit simulation developers
A free, open-source simulator for advanced circuit analysis across desktop platforms and APIs.
8.3/10★★★★☆Visit ngspice -
Best forFree engineering system modeling
Free, open-source system modeling across continuous, discrete, hybrid, and Modelica workflows.
- Offline access
- Authoring tools
8.2/10★★★★☆Visit Xcos -
Best forDiscrete-event systems modeling
A technically deep choice for modeling queues, routing, resources, and event-driven behavior.
- Authoring tools
8.1/10★★★★☆Visit MathWorks -
Best forBroad, free physics authoring and simulation
A broad, free toolkit for physics teaching, modeling, analysis, and simulation authoring.
- Offline access
- Data export
- Lesson library
8.0/10★★★★☆Visit site -
Best forOpen-source kinematics and thermodynamics work
A focused free desktop tool for 2D mechanics and thermodynamics work.
- Lesson library
- Authoring tools
7.9/10★★★★☆Visit GNU FisicaLab -
Best forOpen-source technical mechanics simulation on Linux
A capable free Linux tool for 2D mechanics, learning, and editable experiments.
- Lesson library
- Authoring tools
7.9/10★★★★☆Visit KDE Step -
Best forAffordable multiphysics modelers
A flexible desktop toolbox for affordable multiphysics modeling across engineering and research.
- Data export
- Lesson library
- 3D visuals
7.9/10★★★★☆Visit FEATool -
Best forProfessional OpenFOAM-based CFD
A broad desktop CFD environment with a free plan and professional tiers from €8,000 per seat annually.
- Offline access
- Data export
- 3D visuals
7.9/10★★★★☆Visit SimFlow -
Best forClassroom physics lessons with assessments
A free web collection built for structured physics lessons and assessment.
- Assessment tools
- Lesson library
7.7/10★★★★☆Visit site -
Best forEngineers needing scriptable open FEM/PDE solving
Scriptable FEM/PDE solving across engineering domains, with results for external post-processing.
- Offline access
- Data export
- 3D visuals
7.6/10★★★★☆Visit FeenoX -
Best forEquation-based engineering modelers
A free modeling environment for equation-based simulation, optimization, and engineering studies.
- Data export
- Authoring tools
7.5/10★★★★☆Visit ASCEND -
Best forResearchers modeling aerosol and cloud microphysics
A focused simulation library for aerosol, cloud and rain particle processes.
- Data export
- Lesson library
- Authoring tools
7.4/10★★★★☆Visit PySDM -
Best forResearchers modeling atmospheric air-parcel trajectories
A focused atmospheric transport model for researchers studying air-parcel trajectories.
- Offline access
- Data export
- 3D visuals
7.3/10★★★★☆Visit MPTRAC -
Best forResearchers needing a specialized compressible-flow solver
A Linux-based structured-grid CFD solver with broad flow models and MPI support.
- Offline access
- Data export
- Lesson library
7.2/10★★★★☆Explore FEST-3D -
Best forResearchers running GPU electromagnetic FDTD studies
A free, code-driven FDTD library for GPU-based electromagnetic simulation and optimization.
- Data export
- 3D visuals
- Authoring tools
7.1/10★★★★☆Visit FDTDX -
Best forGeodynamics researchers running thermo-mechanical models
A focused research code for 2D and 3D geodynamics models, run from the command line.
- 3D visuals
7.0/10★★★★☆Visit Mandyoc -
Best forResearchers simulating kinetic flows on CPUs or GPUs
Free, self-hosted Julia software for kinetic-flow research on CPUs or GPUs.
- Offline access
6.9/10★★★☆☆Visit Kinetic.jl -
Best forRadio astronomers simulating interferometer observations
An open-source Python package for precision radio-interferometer observation simulation.
- Data export
- Authoring tools
6.8/10★★★☆☆Visit pyuvsim -
Best forJulia users studying nonlinear dynamical systems
A focused Julia toolkit for simulating and analyzing nonlinear dynamical systems.
- Offline access
- Data export
- 3D visuals
6.7/10★★★☆☆Visit JuliaDynamics -
Best forAstrophysics teams modeling stratified stellar flows
A specialist Linux code for simulating stratified astrophysical flows on adaptive grids.
- Offline access
- Data export
- 3D visuals
6.6/10★★★☆☆Visit MAESTROeX -
Best forDevelopers building high-order finite-element solvers
A self-hosted, matrix-free finite-element library for developers targeting CPU and GPU solvers.
6.5/10★★★☆☆Visit libCEED -
Best forTeams simulating charged-particle and ion optics
Focused 2D/3D field and trajectory modeling for ion and electron optics teams.
6.4/10★★★☆☆Visit SIMION -
Best forNuclear-physics researchers modeling reaction products
A free desktop suite for modeling reaction products, fragment transport and separator optics.
- 3D visuals
6.3/10★★★☆☆Visit LISE++ -
Best forResearchers simulating quantum circuits and many-body
A focused Python library for quantum circuits, tensor networks, and many-body calculations.
6.2/10★★★☆☆Visit Quimb -
Best forFree interactive simulations with offline use
A free, customizable library for exploring physics concepts in 2D, online or offline.
- Offline access
- Data export
- Lesson library
6.1/10★★★☆☆Visit myPhysicsLab -
Best forTeachers building shareable 2D physics scenes
A capable 2D physics sandbox for teacher-led lessons and shareable classroom scenes.
- Lesson library
- Authoring tools
6.0/10★★★☆☆Visit Algodoo -
Best forFree broad-topic 3D simulation browsing
A free, broad-topic web library for exploring physics through adjustable 3D simulations.
- Lesson library
- 3D visuals
5.9/10★★★☆☆Visit SimuPhysics -
Best forFree virtual labs with data tables and export
A free web lab platform with simulations, measurements, graphs, and CSV export.
- Assessment tools
- Lesson library
5.8/10★★★☆☆Visit PhysSandbox -
Best forFree lab, homework, and assessment activities
A broad free web toolkit for physics labs, homework, assessment, and exploration.
- Assessment tools
- Lesson library
- 3D visuals
5.6/10★★★☆☆Visit site -
Best forFree 3D physics learning in the browser
A broad, browser-based physics library for visual learning and practice.
- Assessment tools
- Lesson library
- 3D visuals
5.5/10★★★☆☆Visit 3JCN Physics -
Best forFree broad physics topic coverage
A broad, free collection of 57 browser-based physics simulations.
- Lesson library
5.4/10★★★☆☆Visit Walter Fendt -
Best forPython users automating EPA SWMM stormwater models
A focused Python package for controlling SWMM5 models and working with simulation data.
5.3/10★★★☆☆Visit PySWMM -
Best forOffline desktop physics model authoring
A broad offline physics authoring tool for Windows classrooms.
- Offline access
- 3D visuals
- Authoring tools
5.2/10★★★☆☆Visit Yenka -
Best forFree advanced mechanics and wave activities
A technically rich free simulation collection for mechanics, waves, and electromagnetism.
- Lesson library
- 3D visuals
5.1/10★★★☆☆Visit site -
Best forResearchers running computational fluid dynamics studies
An open-source Python package for researchers modeling fluid flow and solution branches.
- 3D visuals
- Authoring tools
5.0/10★★☆☆☆Visit TransiFlow -
Best forTeams performing vascular CFD studies
A focused open-source Python workflow for patient-specific vascular CFD research.
- Offline access
- 3D visuals
4.9/10★★☆☆☆Visit VaMPy -
Best forManufacturing teams simulating resin-transfer molding
A focused, free RTM filling solver for teams working with composite preforms.
- Offline access
- Data export
4.8/10★★☆☆☆Visit RTMsim -
Best forTeams simulating packed-bed thermal energy storage
A focused finite-volume framework for transient packed-bed thermal modeling.
- Authoring tools
4.7/10★★☆☆☆Visit OpenTerrace -
Best forResearchers modeling flood hydrodynamics programmatically
A self-hosted Python framework for programmable flood and hydrodynamic modeling.
4.6/10★★☆☆☆Visit SynxFlow -
Best forRadiative-transfer researchers using Python
A focused open-source Python library for layered 1D radiative-transfer calculations.
4.5/10★★☆☆☆Visit PythonicDISORT -
Best forResearchers simulating granular particle systems
A focused Linux tool for local discrete-element simulations of particles and granular materials.
- Offline access
4.4/10★★☆☆☆Visit exaDEM -
Best forAstronomy researchers fitting strong-lensing data
A specialized toolkit for fitting and simulating strong gravitational lens observations.
- Offline access
- Data export
4.3/10★★☆☆☆Visit PyAutoLens -
Best forFree simulations with CSV experiment data
A free browser-based physics lab with guided experiments and CSV data export.
- Data export
- Lesson library
4.2/10★★☆☆☆Visit Physiverse -
Best forDevelopers simulating time-dependent quantum systems
A focused Python library for modeling time-dependent quantum systems and pulse workflows.
- Authoring tools
4.1/10★★☆☆☆Try Qiskit Dynamics -
Best forMRI researchers running GPU diffusion simulations
A focused, open-source CUDA simulator for configurable diffusion-MRI tissue models.
- Data export
- 3D visuals
- Authoring tools
4.0/10★★☆☆☆Visit simDRIFT
No tools match those filters.
Compare at a glance
| # | Tool | Free plan | Paid from | Delivery mode | Lesson library | Authoring tools | 3D visuals | Score |
|---|---|---|---|---|---|---|---|---|
| 1 | COMSOL Multiphysics | No | Desktop | Yes | Yes | Yes | 9.4 | |
| 2 | Ansys Fluent | Hybrid | Yes | 9.3 | ||||
| 3 | SimScale | Yes | Web | Yes | Yes | Yes | 9.1 | |
| 4 | OpenFOAM | Yes | Free | Desktop | Yes | 9.0 | ||
| 5 | OpenSim | Yes | Free | Desktop | Yes | Yes | Yes | 8.4 |
| 6 | ngspice | Yes | Free | 8.3 | ||||
| 7 | Xcos | Yes | Free | Desktop | No | Yes | 8.2 | |
| 8 | SimEvents | No | Desktop | No | Yes | No | 8.1 | |
| 9 | Open Source Physics | Free | Hybrid | Yes | Yes | Yes | 8.0 | |
| 10 | GNU FisicaLab | Yes | Free | Desktop | Yes | Yes | No | 7.9 |
| 11 | Step | Yes | Free | Desktop | Yes | Yes | No | 7.9 |
| 12 | FEATool Multiphysics | No | Desktop | Yes | Yes | Yes | 7.9 | |
| 13 | SimFlow | Yes | €8,000/seat/yr | Desktop | Yes | Yes | 7.9 | |
| 14 | Physics Classroom Physics Interactives | Yes | Free | Web | Yes | 7.7 | ||
| 15 | FeenoX | Yes | Free | Desktop | No | Yes | Yes | 7.6 |
| 16 | ASCEND | Yes | Free | Desktop | Yes | 7.5 | ||
| 17 | PySDM | Yes | Free | Hybrid | Yes | Yes | 7.4 | |
| 18 | MPTRAC | Yes | Free | Hybrid | No | No | Yes | 7.3 |
| 19 | FEST-3D | Free | Desktop | Yes | Yes | Yes | 7.2 | |
| 20 | FDTDX | Yes | Free | Desktop | No | Yes | Yes | 7.1 |
| 21 | Mandyoc | Yes | Free | Desktop | Yes | 7.0 | ||
| 22 | Kinetic.jl | Yes | Free | Desktop | No | No | No | 6.9 |
| 23 | pyuvsim | Yes | Free | Desktop | No | Yes | 6.8 | |
| 24 | DynamicalSystems.jl | Yes | Free | Desktop | Yes | Yes | 6.7 | |
| 25 | MAESTROeX | Free | Desktop | No | No | Yes | 6.6 | |
| 26 | libCEED | Yes | Free | 6.5 | ||||
| 27 | SIMION | No | 6.4 | |||||
| 28 | LISE++ | Yes | Free | Desktop | Yes | 6.3 | ||
| 29 | Quimb | Yes | Free | Desktop | No | No | No | 6.2 |
| 30 | myPhysicsLab | Yes | Free | Hybrid | Yes | Yes | No | 6.1 |
| 31 | Algodoo | Yes | Hybrid | Yes | Yes | No | 6.0 | |
| 32 | SimuPhysics | Yes | Free | Web | Yes | Yes | 5.9 | |
| 33 | PhysSandbox | Yes | Free | Web | Yes | 5.8 | ||
| 34 | The Physics Aviary | Yes | Free | Web | Yes | Yes | 5.6 | |
| 35 | 3JCN Physics Simulation | Yes | Free | Web | Yes | Yes | 5.5 | |
| 36 | Walter Fendt Apps on Physics | Yes | Free | Web | Yes | 5.4 | ||
| 37 | PySWMM | Yes | Free | Desktop | 5.3 | |||
| 38 | Yenka Physics | Desktop | Yes | Yes | 5.2 | |||
| 39 | PhysicsPlayground | Yes | Free | Web | Yes | Yes | 5.1 | |
| 40 | TransiFlow | Yes | Free | Desktop | No | Yes | Yes | 5.0 |
| 41 | VaMPy | Yes | Free | Desktop | No | No | Yes | 4.9 |
| 42 | RTMsim | Yes | Free | Desktop | 4.8 | |||
| 43 | OpenTerrace | Yes | Free | Desktop | Yes | No | 4.7 | |
| 44 | SynxFlow | Yes | Free | 4.6 | ||||
| 45 | PythonicDISORT | Free | No | 4.5 | ||||
| 46 | exaDEM | Yes | Free | Desktop | No | No | 4.4 | |
| 47 | PyAutoLens | Yes | Free | Desktop | No | No | No | 4.3 |
| 48 | Physiverse | Yes | Free | Web | Yes | 4.2 | ||
| 49 | Qiskit Dynamics | Yes | Free | Desktop | No | Yes | 4.1 | |
| 50 | simDRIFT | Yes | Free | Desktop | Yes | Yes | 4.0 |
Head-to-head All 28 comparisons →
- COMSOL Multiphysics vs Ansys Fluent
- COMSOL Multiphysics vs SimScale
- COMSOL Multiphysics vs OpenFOAM
- COMSOL Multiphysics vs OpenSim
- COMSOL Multiphysics vs ngspice
- COMSOL Multiphysics vs Xcos
- COMSOL Multiphysics vs SimEvents
- Ansys Fluent vs SimScale
- Ansys Fluent vs OpenFOAM
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How we rank physics simulation software
Every tool on this page was researched by iTechGuides Editors from its official website — pricing pages, plan tables and product documentation. We rank on how well each one does this category's core job, what the free or entry plan includes, and where it falls short. Where we have enough verified facts, the score out of 10 is a rubric — job fit, value and how much we could verify — shown with its breakdown on every tool's page; a tool we have not verified enough to score yet shows its rank without a number. Scores are re-checked when a product changes its plans. Read the full editorial policy, or submit a tool we missed.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Last updated · How we research and update