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COMSOL Multiphysics vs OpenSCAD

COMSOL Multiphysics logo

COMSOL Multiphysics

CAD

Finite element simulation built around coupling physics, with add-on modules licensed separately

From
On request
Rated
-
Full reviewWebsite
OpenSCAD logo

OpenSCAD

CAD

The programmers solid 3D CAD modeler

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only OpenSCAD has a free tier, so it costs nothing to try first.
  • Each has a real cost: COMSOL Multiphysics the base licence covers very little on its own and nearly every practical problem needs one or more add-on modules, each priced separately, so the quoted total is typically a multiple of the headline base figure.; OpenSCAD script-based workflow, not interactive design interface
  • They diverge on capability: COMSOL Multiphysics covers Coupled multiphysics solving, OpenSCAD covers Script-based modeling.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which COMSOL Multiphysics and OpenSCAD actually diverge.

Attributes where COMSOL Multiphysics and OpenSCAD differ
AttributeCOMSOL MultiphysicsOpenSCAD
Starting priceOn requestFree
Pricing modelquotefree
Free tierNoYes
PlatformsWindows, Linux, macOSWindows, macOS, Linux, WebAssembly
FoundedUnknown2009

Identical on both: user rating (Not yet rated), category (CAD).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in COMSOL Multiphysics

  • Coupled multiphysics solving
  • Equation-based modelling
  • Add-on module library
  • Application Builder
  • COMSOL Compiler and Server
  • CAD import and LiveLink
  • Parametric sweeps and optimisation
  • Cluster and cloud computing

Only in OpenSCAD

  • Script-based modeling
  • CSG operations
  • 2D to 3D extrusion
  • Parameterization
  • STL export
  • Preview
  • 3D printers
  • Slicers

What people use each for

The jobs each tool is most often brought in to do.

COMSOL Multiphysics

  • Modelling a device where physics are strongly coupled, such as induction heating that changes material properties which change the fieldnot OpenSCAD
  • Research work needing custom partial differential equations that no packaged solver in a mainstream tool providesnot OpenSCAD
  • Packaging a validated model as an app so process engineers can run studies without learning the simulation toolnot OpenSCAD
  • A department wanting shared concurrent access via a Floating Network Licence, with cluster runs at no extra licence costnot OpenSCAD

OpenSCAD

  • Parametric 3D design for manufacturing and 3D printingnot COMSOL Multiphysics
  • Technical design with scripted control over geometrynot COMSOL Multiphysics
  • Procedural model generationnot COMSOL Multiphysics

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

COMSOL Multiphysics

  • The base licence covers very little on its own and nearly every practical problem needs one or more add-on modules, each priced separately, so the quoted total is typically a multiple of the headline base figure.
  • Perpetual licences renew maintenance at 20% of the then-current price each year, and because that percentage applies to the whole module stack the annual bill grows as your module list does and as list prices rise.
  • No pricing at all is published, so procurement cannot benchmark or budget without a sales engagement, and comparisons against Ansys or SolidWorks Simulation are effectively impossible before that point.
  • Named Single-User and CPU-locked licences do not share, so a team of six that bought individual licences ends up with idle seats while a Floating Network Licence would have covered them, and switching licence type is a commercial renegotiation.
  • Solving strongly coupled systems is memory hungry and slow, and models that look modest in the GUI routinely need tens of gigabytes of RAM, so hardware cost is a real and often underestimated part of adoption.

OpenSCAD

  • Script-based workflow, not interactive design interface
  • Limited to constructive solid geometry and 2D extrusion modelling
  • Not suitable for artistic 3D modelling or computer animation
  • Complex build dependencies (Qt, CGAL, Boost)

Pricing, plan by plan

COMSOL Multiphysics

On request
  • COMSOL Multiphysics base licence$undefined/year
    • CPU-locked, Named Single-User or Floating Network licence types
    • Perpetual or term licensing
    • Perpetual includes updates and support for 12 months, then renews at 20% of current price
  • Academic licences$undefined/year
    • Class Kit Licence for up to 30 concurrent users per class
    • Academic Server Licence for up to 300 concurrent app users
    • Quote through the academic sales channel

OpenSCAD

Free

No published plan breakdown. See the OpenSCAD review.

Which should you pick?

Choose COMSOL Multiphysics if

  • You need coupled multiphysics solving.
  • You work on Windows, Linux, macOS.
  • You also want equation-based modelling.
COMSOL Multiphysics review

Choose OpenSCAD if

  • You need script-based modeling.
  • You want to start without paying.
  • You work on Windows, macOS, Linux, WebAssembly.
  • You also want csg operations.
OpenSCAD review

Questions people ask

Is COMSOL Multiphysics or OpenSCAD better?
Neither clearly leads. COMSOL Multiphysics starts at On request and OpenSCAD at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, COMSOL Multiphysics or OpenSCAD?
OpenSCAD has a free tier; the other does not. Paid plans start at On request for COMSOL Multiphysics and Free for OpenSCAD.
Does COMSOL Multiphysics or OpenSCAD run on more platforms?
COMSOL Multiphysics runs on Windows, Linux, macOS. OpenSCAD runs on Windows, macOS, Linux, WebAssembly.
Can I use OpenSCAD for free?
Yes. OpenSCAD has a free tier, so you can try it without paying. COMSOL Multiphysics starts at On request.
What is COMSOL Multiphysics best used for?
COMSOL Multiphysics is most often used for modelling a device where physics are strongly coupled, such as induction heating that changes material properties which change the field, research work needing custom partial differential equations that no packaged solver in a mainstream tool provides, packaging a validated model as an app so process engineers can run studies without learning the simulation tool, a department wanting shared concurrent access via a floating network licence, with cluster runs at no extra licence cost. Of those, modelling a device where physics are strongly coupled, such as induction heating that changes material properties which change the field and research work needing custom partial differential equations that no packaged solver in a mainstream tool provides are not what OpenSCAD is typically brought in for.
What can COMSOL Multiphysics do that OpenSCAD cannot?
COMSOL Multiphysics covers Coupled multiphysics solving, Equation-based modelling, Add-on module library, Application Builder. OpenSCAD covers Script-based modeling, CSG operations, 2D to 3D extrusion, Parameterization.

Answered from the vendors’ own pages

COMSOL Multiphysics: Does the base licence include CFD or structural mechanics?

Only limited capability. Serious CFD, structural, RF and acoustics work each require the relevant add-on module at extra cost.

OpenSCAD: What is the cost of OpenSCAD?

OpenSCAD is free software with no licensing fees, subscriptions, or costs of any kind. The software is available as open-source with no restrictions on commercial or non-commercial use.

Source
COMSOL Multiphysics: What does maintenance cost?

Perpetual licences include 12 months of updates and support, then renew at 20% of the then-current price per year.

COMSOL Multiphysics: Which licence type should a team buy?

Floating Network if more than a couple of people use it, since it shares concurrency and includes cluster and cloud computing at no extra charge.

COMSOL Multiphysics: Is pricing published?

No. COMSOL publishes licence types but no prices; every purchase goes through a quote.

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