3JCN Physics Simulation vs FeenoX
3JCN Physics Simulation
new3jcn.comFeenoX
seamplex.comSide by side
| Figure | 3JCN Physics Simulation | FeenoX |
|---|---|---|
| Price from | Free | Free |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | — | — |
| Web | Yes | Yes |
| Linux | — | Yes |
| API | — | Yes |
| Self-hosted | — | Yes |
| Plans published | 1 | 2 |
| Spec score · Physics Simulation Software | 8.0 (#32) | 8.8 (#3) |
| Assessment tools | Yes | No |
| Delivery mode | web | desktop |
| Free plan | Yes | Yes |
| Integrations | The maker acknowledges inspiration from Three.js, PhET, Boston University Physics Simulation, Magnet Academy, oPhysics, and QuVis. | It reads Gmsh meshes, uses PETSc and SLEPc solvers, and writes Gmsh MSH or ParaView VTK/VTU results. |
| Lesson library | Yes | No |
| License | All simulations are freely available under a CC BY 4.0 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. |
| Purpose | Provides more than 360 interactive 3D physics simulations for students and instructors. | FeenoX is a cloud-first computational engineering tool for solving engineering problems with one or many computers in parallel. |
| Support | Users can send a report about a simulation issue through the page's report link. | The project directs users to GitHub Discussions for help and GitHub Issues for bug reporting. |
| 3D visuals | Yes | Yes |
Plans
In their own words
3JCN Physics Simulation
3JCN Physics Simulation has no write-up on Specifiction yet; its figures are above.
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.