Side by side
MPTRAC vs SimFlow
Both stand on physics simulation software. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Free plan LinuxSelf-hostedWeb
MPTRAC combines trajectory modeling, optional atmospheric process parameterizations, and multiple output formats for research use. Its browser runner offers a no-install route, with explicit limits on simulation size and runtime.
Visit MPTRAC
Free plan LinuxMacWeb+1
SimFlow offers a locally run CFD workflow, with a free option capped by mesh size and CPU count. Its commercial plans provide unlimited mesh and CPUs, but start at €8,000 per year.
Visit SimFlowThe facts
| MPTRAC | SimFlow | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | Not published | Not published |
| Runs on | Linux, Self-hosted, Web | Linux, Mac, Web, Windows |
| Lowest paid plan | Free or on request | Professional: €8,000 a year |
| Plans published | 2 | 3 |
| Maker | MPTRAC | SimFlow |
| Website | slcs-jsc.github.io | sim-flow.com |
| On physics simulation software | #8 of 89 | #4 of 89 |
MPTRAC: what it does well
- Free software under the GPL-3.0 license
- Web Runner works without local installation
- Supports forward and backward trajectories
- Optional chemistry and deposition parameterizations
- Hybrid parallelization for clusters and GPU-enabled systems
What to know first
- Web Runner caps runs at 10,000 parcels
- Web Runner limits simulations to 30 days
- Web Runner allows 10 minutes of runtime
- Requires meteorological input data
SimFlow: what it does well
- Free plan has no signup or time limit.
- All plans include the full simulation engine.
- Runs locally on Windows, Linux, and macOS.
- Offline licensing is available.
- Perpetual licenses are offered.
What to know first
- Free plan is limited to 200,000 mesh nodes.
- Free plan is limited to one CPU.
- Professional costs €8,000 per year.
- Commercial trials last 30 days.
Alternatives to MPTRAC Alternatives to SimFlow The whole list