Alternatives to OpenSim

COMSOL Multiphysics

It suits engineers, scientists, technical enterprises, research labs, and universities working with simulation models.

FeenoX is aimed at advanced users, including engineers, Unix hackers, and academic professors.

myPhysicsLab suits learners exploring physics concepts, as well as people who want to customize interactive simulations with EasyScript or JavaScript.

OpenFOAM

OpenFOAM suits science and engineering companies, consultancies, and universities working on fluid-flow or heat-transfer simulations.

MPTRAC suits atmospheric researchers studying transport, dispersion or chemistry who can provide meteorological input data.

It suits teams modeling communication systems, hybrid Simulink systems, or operational processes requiring queue, resource, and performance analysis.

FEATool Multiphysics

FEATool suits engineers, researchers, teachers, and students in industry or academia who need multiphysics modeling and solver integrations.

FEST-3D suits users working on aerodynamic flow simulations who can build and run a Fortran and MPI application.

FisicaLab suits learners who want to focus on physics concepts before solving calculations by hand.

ngspice suits users who can describe circuits as netlists and want to simulate analog, digital, or mixed-signal designs.

Step suits Linux users learning or experimenting with simulated physical systems, including people who want editable experiments and built-in tutorials.

It suits learners seeking physics lessons and educators or others who want authoring tools for learning materials.