FeenoX vs OPEM
FeenoX
seamplex.comOPEM
ecsim.siteSide by side
| Figure | FeenoX | OPEM |
|---|---|---|
| Price from | Free | Free |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | — | — |
| Web | Yes | Yes |
| Windows | — | Yes |
| Linux | Yes | Yes |
| API | Yes | Yes |
| Self-hosted | Yes | — |
| Plans published | 2 | 1 |
| Spec score · Physics Simulation Software | 8.8 (#3) | 7.7 (#45) |
| Delivery mode | desktop | desktop |
| Free plan | Yes | Yes |
| License | FeenoX is distributed under the GNU General Public License version 3 or any later version, with freedom to use, modify and redistribute it under the license terms. | The GitHub repository lists an MIT license. |
| Offline access | Yes | Yes |
| Purpose | FeenoX is a cloud-first computational engineering tool for solving engineering problems with one or many computers in parallel. | OPEM models and evaluates proton-exchange membrane fuel-cell performance using static and dynamic models. |
| Support | The project directs users to GitHub Discussions for help and GitHub Issues for bug reporting. | The README directs users to file an issue or email [email protected] for bug reports, and mentions a Discord server. |
Plans
In their own words
FeenoX
FeenoX is free, open-source computational engineering software for solving mathematical and engineering problems, including work across computers in parallel. It handles ODEs and DAEs, along with finite-element problems such as heat conduction, thermo-mechanical analysis, modal analysis, neutron diffusion, and neutron transport. Users describe problems in self-descriptive, English-like plain-text input files, so changes do not require recompiling. FeenoX reads Gmsh meshes and writes results in Gmsh MSH or ParaView VTK/VTU formats. It uses GNU GSL, SUNDIALS, PETSc, and SLEPc for computational tasks, and supports MPI parallelization. Installation options include Debian or Ubuntu packages, source tarballs, the GitHub repository, and generic statically linked GNU/Linux binaries. Ubuntu packages are available from version 25.04 onward. The generic binaries omit MUMPS and MPI and use basic optimization flags. FeenoX has no graphical interface, targets GNU/Linux, and is not expected to run in Windows. Browser access is available through interfaces such as SunCAE and CAEplex.