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CAD · head to head

FreeCAD vs Siemens NX

FreeCAD logo

FreeCAD

CAD

Open-source parametric 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 FreeCAD has a free tier, so it costs nothing to try first.
  • Each has a real cost: FreeCAD no pricing published; product is completely free and open-source; 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: FreeCAD covers Parametric 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 FreeCAD and Siemens NX actually diverge.

Attributes where FreeCAD and Siemens NX differ
AttributeFreeCADSiemens NX
Starting priceFree$29/month
Pricing modelopen-sourcesubscription
Free tierYesNo
PlatformsWindows, macOS, LinuxWindows, Linux
Founded20021963

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 FreeCAD

  • Parametric modeling
  • Part design
  • Assembly
  • Drafting
  • FEM simulation
  • Path/CAM
  • Architecture
  • BIM

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.

FreeCAD

  • Mechanical engineering designnot Siemens NX
  • Architectural modellingnot Siemens NX
  • Product design and prototypingnot Siemens NX
  • CAM/CNC path generationnot Siemens NX

Siemens NX

  • Enterprise product designnot FreeCAD
  • Manufacturingnot FreeCAD
  • Simulationnot FreeCAD

Where each one falls short

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

FreeCAD

  • No pricing published; product is completely free and open-source
  • Donations are optional and voluntary for project support

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

FreeCAD

Free

No published plan breakdown. See the FreeCAD 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 FreeCAD if

  • You need parametric modeling.
  • You want to start without paying.
  • You work on Windows, macOS, Linux.
  • You also want part design.
FreeCAD 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 FreeCAD or Siemens NX better?
Neither clearly leads. FreeCAD 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, FreeCAD or Siemens NX?
FreeCAD has a free tier; the other does not. Paid plans start at Free for FreeCAD and $29/month for Siemens NX.
Does FreeCAD or Siemens NX run on more platforms?
FreeCAD runs on Windows, macOS, Linux. Siemens NX runs on Windows, Linux.
Can I use FreeCAD for free?
Yes. FreeCAD has a free tier, so you can try it without paying. Siemens NX starts at $29/month.
What is FreeCAD best used for?
FreeCAD is most often used for mechanical engineering design, architectural modelling, product design and prototyping, cam/cnc path generation. Of those, mechanical engineering design and architectural modelling are not what Siemens NX is typically brought in for.
What can FreeCAD do that Siemens NX cannot?
FreeCAD covers Parametric modeling, Part design, Assembly, Drafting. Siemens NX covers Advanced CAD, CAM programming, CAE simulation, Additive manufacturing. Both handle Windows support, Linux support.

Answered from the vendors’ own pages

FreeCAD: How much does FreeCAD cost?

FreeCAD is completely free with no licensing fees, vendor lock-in, sign-up requirements, paywalls, or restrictions. The software is open-source and available for anyone to use and adapt.

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
FreeCAD: Does FreeCAD offer optional support or sponsorship?

FreeCAD accepts voluntary donations to support the project. Sponsorship tiers range from $1 per month (Normal Sponsor) to $200 per month (Gold Sponsor), with different visibility levels. One-time donations of any amount are also accepted.

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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