SimFlow From €666.67/mo · Free plan 9.3 Visit FeenoX
seamplex.com
What it is
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.
Spec sheet
- Purpose
- FeenoX is a cloud-first computational engineering tool for solving engineering problems with one or many computers in parallel.Read 28 Sep 2026 · seamplex.com
- Audience
- Official pages present FeenoX for industry engineers, Unix hackers and academic professors, with advanced users as the target audience.Read 28 Sep 2026 · seamplex.com
- Free plan
- YesRead 24 Sep 2026 · seamplex.com
- Integrations
- It reads Gmsh meshes, uses PETSc and SLEPc solvers, and writes Gmsh MSH or ParaView VTK/VTU results.Read 28 Sep 2026 · seamplex.com
- Support
- The project directs users to GitHub Discussions for help and GitHub Issues for bug reporting.Read 28 Sep 2026 · seamplex.com
- 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.Read 28 Sep 2026 · seamplex.com
- 3D visuals
- YesRead 24 Sep 2026 · seamplex.com
- API integration
- The design supports straightforward integration with web interfaces, large language models, REST APIs, standard post-processing tools, Markdown and LaTeX reporting.Read 28 Sep 2026 · seamplex.com
- Assessment tools
- NoRead 24 Sep 2026 · seamplex.com
- Authoring tools
- YesRead 24 Sep 2026 · seamplex.com
- Binary limitation
- The generic statically linked GNU/Linux binaries do not support MUMPS or MPI and use only basic optimization flags.Read 28 Sep 2026 · seamplex.com
- Binary limitations
- Generic binaries do not support MUMPS or MPI and use only basic optimization flags.Read 28 Sep 2026 · seamplex.com
- Contributions welcome
- Contributions from hackers and academics are welcome, especially new PDEs and formulations.Read 28 Sep 2026 · seamplex.com
- Data export
- YesRead 24 Sep 2026 · seamplex.com
- Delivery mode
- desktopRead 24 Sep 2026 · seamplex.com
- Engineering problems
- It supports mathematical problems, ODEs/DAEs, and finite-element PDEs.Read 28 Sep 2026 · seamplex.com
- Free open source
- FeenoX is free in both the no-cost and freedom senses, and open source.Read 28 Sep 2026 · seamplex.com
- GitHub support
- Users can ask for help on the GitHub discussions page.Read 28 Sep 2026 · seamplex.com
- Gmsh mesh format
- Input meshes use Gmsh's .msh format.Read 28 Sep 2026 · seamplex.com
- GNU/Linux binaries
- Generic GNU/Linux binaries are provided as statically linked executables.Read 28 Sep 2026 · seamplex.com
- GUI limitation
- FeenoX has no graphical interface and is not expected to run in Windows; the official documentation targets GNU/Linux.Read 28 Sep 2026 · seamplex.com
- Input model
- Problems are defined in self-descriptive English-like plain-text input files, so changing a problem does not require recompiling.Read 28 Sep 2026 · seamplex.com
- Installation
- Official installation options include Debian or Ubuntu packages, statically linked GNU/Linux binaries, source tarballs and the GitHub repository.Read 28 Sep 2026 · seamplex.com
- Lesson library
- NoRead 24 Sep 2026 · seamplex.com
- MPI parallelization
- FeenoX supports MPI parallelization.Read 28 Sep 2026 · seamplex.com
- Offline access
- YesRead 24 Sep 2026 · seamplex.com
- Open-source libraries
- It uses GNU GSL, SUNDIALS, PETSc, and SLEPc for computational tasks.Read 28 Sep 2026 · seamplex.com
- Parallelism
- FeenoX supports MPI parallelization and is designed for arbitrarily scalable remote servers.Read 28 Sep 2026 · seamplex.com
- Plain-text inputs
- Problems use syntactically sugared, self-descriptive English-like plain-text input files.Read 28 Sep 2026 · seamplex.com
- Problem types
- It solves dynamical systems expressed as ODEs or DAEs, heat conduction, thermo-mechanical problems, modal analysis, neutron diffusion and neutron transport.Read 28 Sep 2026 · seamplex.com
- Transparency
- The source code and its dependencies are free and open source, and the project provides unit, regression and mathematical or code verification tests.Read 28 Sep 2026 · seamplex.com
- Ubuntu support
- FeenoX is available in Ubuntu 25.04 onward.Read 28 Sep 2026 · seamplex.com
- Warranty
- The official license notice states that FeenoX comes with no warranty to the extent permitted by law.Read 28 Sep 2026 · seamplex.com
- Web access
- Users can access FeenoX through web-based interfaces such as SunCAE, while CAEplex provides a browser-based cloud interface.Read 28 Sep 2026 · seamplex.com
Plans and prices
FeenoX Free GNU GPLv3+ open-source software no graphical interface · targets GNU/Linux · generic binaries omit MUMPS and MPI Read 28 Sep 2026 · seamplex.com
Free Free Free and no-fee; no paid pricing is stated. Read 28 Sep 2026 · seamplex.com
Strong points and limits
Strong points
- Free and open source under GNU GPLv3+.
- Supports MPI parallelization.
- Reads Gmsh meshes and exports result formats.
- Supports ODEs, DAEs, and finite-element PDEs.
- Browser access is available through listed interfaces.
Limits
- Has no graphical interface.
- Targets GNU/Linux and is not expected to run in Windows.
- Generic binaries omit MUMPS and MPI.
Who it suits
FeenoX is aimed at advanced users, including engineers, Unix hackers, and academic professors. It suits users comfortable with plain-text problem files and GNU/Linux tools.
Verdict
FeenoX offers a plain-text workflow for a wide range of engineering calculations, with MPI support and open-source dependencies. Its GNU/Linux focus, lack of a graphical interface, and generic-binary limitations matter when choosing an installation route.
Where Specifiction places it
- Physics Simulation Software#3 of 898.8
