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CAD · head to head

OpenSCAD vs Siemens NX

OpenSCAD logo

OpenSCAD

CAD

The programmers solid 3D CAD modeler

From
Free
Rated
-
Full reviewWebsite
Siemens NX logo

Siemens NX

CAD

Integrated product design and manufacturing

From
$29/month
Rated
-
Full reviewWebsite

The short version

  • Only OpenSCAD has a free tier, so it costs nothing to try first.
  • Each has a real cost: OpenSCAD script-based workflow, not interactive design interface; Siemens NX siemens NX offers only a 30-day free trial with no published subscription or perpetual license price; buyers must go through a sales process to get pricing, per the vendor's own product page.
  • They diverge on capability: OpenSCAD covers Script-based modeling, Siemens NX covers Advanced CAD.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which OpenSCAD and Siemens NX actually diverge.

Attributes where OpenSCAD and Siemens NX differ
AttributeOpenSCADSiemens NX
Starting priceFree$29/month
Pricing modelfreesubscription
Free tierYesNo
PlatformsWindows, macOS, Linux, WebAssemblyWindows, Linux
Founded20091963

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 OpenSCAD

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

Only in Siemens NX

  • Advanced CAD
  • CAM programming
  • CAE simulation
  • Additive manufacturing
  • Sheet metal
  • Mold design
  • Industrial machinery
  • Teamcenter PLM

Both cover

  • Windows support
  • Linux support

What people use each for

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

OpenSCAD

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

Siemens NX

  • Enterprise product designnot OpenSCAD
  • Manufacturingnot OpenSCAD
  • Simulationnot OpenSCAD

Where each one falls short

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

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)

Siemens NX

  • Siemens NX offers only a 30-day free trial with no published subscription or perpetual license price; buyers must go through a sales process to get pricing, per the vendor's own product page.

Pricing, plan by plan

OpenSCAD

Free

No published plan breakdown. See the OpenSCAD review.

Siemens NX

$29/month
  • NX Design$4500/month
    • CAD design
    • Core modeling
  • NX CAM$5500/month
    • Manufacturing programming
  • NX Complete$8500/month
    • Full suite
    • CAD/CAM/CAE

Which should you pick?

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

Choose Siemens NX if

  • You need advanced cad.
  • You work on Windows, Linux.
  • You also want cam programming.
Siemens NX review

Questions people ask

Is OpenSCAD or Siemens NX better?
Neither clearly leads. OpenSCAD starts at Free and Siemens NX at $29/month, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, OpenSCAD or Siemens NX?
OpenSCAD has a free tier; the other does not. Paid plans start at Free for OpenSCAD and $29/month for Siemens NX.
Does OpenSCAD or Siemens NX run on more platforms?
OpenSCAD runs on Windows, macOS, Linux, WebAssembly. Siemens NX runs on Windows, Linux.
Can I use OpenSCAD for free?
Yes. OpenSCAD has a free tier, so you can try it without paying. Siemens NX starts at $29/month.
What is OpenSCAD best used for?
OpenSCAD is most often used for parametric 3d design for manufacturing and 3d printing, technical design with scripted control over geometry, procedural model generation. Of those, parametric 3d design for manufacturing and 3d printing and technical design with scripted control over geometry are not what Siemens NX is typically brought in for.
What can OpenSCAD do that Siemens NX cannot?
OpenSCAD covers Script-based modeling, CSG operations, 2D to 3D extrusion, Parameterization. Siemens NX covers Advanced CAD, CAM programming, CAE simulation, Additive manufacturing. Both handle Windows support, Linux support.

Answered from the vendors’ own pages

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
Siemens NX: Does Siemens NX offer a free trial?

Yes, Siemens offers a 30-day free trial of both Designcenter CAD and NX CAM software that is fully functional. Users can get a hands-on feel for the software without any financial commitment before purchasing.

Source
Siemens NX: Is NX free for students?

Yes, Siemens offers free CAD/CAM Student Edition access to Designcenter and NX for students and educators. Academic offerings are available for those in educational institutions.

Source
Siemens NX: What licensing options does NX provide for different business sizes?

Siemens offers scalable licensing for startups, mid-size companies, and multinational corporations. Designcenter and NX CAM support flexible team-based licensing to match organizational size and manufacturing needs.

Source
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