Comparison
PolySim OS vs OpenModelica
OpenModelica is a free, open-source implementation of the Modelica language for equation-based, multi-domain system modeling — very powerful for physical system design. It's also a desktop tool with a real learning curve. PolySim trades some depth for instant, browser-based, interactive accessibility across hundreds of ready-made models.
PolySim OS
From $0 (free local) · $24/mo Independent Researcher
OpenModelica
Free and open-source.
See PolySim in action
Live, interactive simulators that run free in your browser — no install, no license.
Feature comparison
| Feature | PolySim OS | OpenModelica |
|---|---|---|
| Price | Free locally | Free (open-source) |
| Runs in browser | Yes | No — desktop install |
| Equation-based system modeling | Node graph + solvers | Yes — Modelica language |
| Ready-made interactive sims | 390+ | Build in Modelica |
| Learning curve | Gentle, AI-assisted | Steep |
Where OpenModelica is strong
- • Powerful equation-based modeling
- • Multi-domain (thermal/mechanical/electrical)
- • Free & open
Where PolySim wins
- • Steep learning curve
- • Desktop-bound
- • No ready-made interactive library
Choose OpenModelica for rigorous equation-based system modeling; choose PolySim for instant, interactive, browser-based simulation and teaching.
Switching from OpenModelica?
Math / Dynamical Systems Kit — $19
ODEs, PDEs, chaos, and dynamical-systems exploration.
Popular products
Research Paper Repro Kit
$29Tools to reproduce and publish results from a paper.
Certified Reproducibility Seal
$12A verified seal certifying a run is fully reproducible.
arXiv / PubMed Literature Digest
$8A cited digest of recent literature on your topic.
Creator / Educator
$19/moShare classrooms, publish embeds, and teach with PolySim.
Featured Partner Placement
$99/moFeatured placement for hardware/cloud partners on guides.
High-Res Mesh Credit
$4Unlock a fine-mesh solve for higher spatial accuracy on one run.