E

Elmer FEM

Open-source multiphysics simulation software

★ Stars1.7k1,737 on GitHub
Last commit18 Oct 2026
LicenceGPL-2.0Per the project
View on GitHub ↗

From GitHub, fetched 19 Oct 2026.

Elmer is a finite-element multiphysics suite from CSC (Finland) covering fluid dynamics, structural mechanics, electromagnetics, heat transfer and acoustics, with a GUI (ElmerGUI) for setting up cases.

Fit: files and licence

Runs onWindows, macOS, Linux
Commercial useAllowed
Open-source licence (GPL-2.0): the Open Source Definition rules out restrictions on fields of use, including business use.

Sources: opensource.org/osd. “Runs on” is from this listing. Blank means we haven't found it in official docs yet, not that it's unsupported.

Free alternative to

In collections

Related tools

OpenFOAM

Simulation (FEA & CFD)

Free, open-source computational fluid dynamics toolbox

Stars
★ 2.3k
Licence
GPL-3.0
Updated
  • Commercial OK

Alternative to ANSYS

ParaView

Simulation (FEA & CFD)

Open-source data analysis and visualisation for simulation results

Stars
★ 1.7k
Licence
BSD-3-Clause
Updated
  • Commercial OK

Alternative to Tecplot

Gmsh

Simulation (FEA & CFD)

3D finite-element mesh generator with a built-in CAD engine

Stars
★ 125
Licence
GPL-2.0+
Updated
  • Commercial OK

Alternative to ANSYS

C

code_aster

Simulation (FEA & CFD)

Structural and thermomechanical FEA solver developed by EDF

Stars
★ 32
Licence
GPL-3.0
Updated
  • Commercial OK

Alternative to Abaqus, ANSYS

C

CalculiX

Simulation (FEA & CFD)

Free three-dimensional structural finite-element program

Licence
GPL-2.0
Status
Open source
  • Commercial OK

Alternative to Abaqus, ANSYS

SALOME

Simulation (FEA & CFD)

Open-source platform for simulation pre- and post-processing

Licence
LGPL-2.1
Updated
  • Commercial OK

Alternative to ANSYS