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CAD · head to head

Carlson Software vs OpenSCAD

Carlson Software logo

Carlson Software

CAD

Survey and civil design CAD sold as a perpetual licence with optional maintenance

From
$4450/one-time
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: Carlson Software the perpetual licence is a larger upfront cost than a first-year subscription, which is harder to approve for a practice with tight cash flow even though it is cheaper over five years.; OpenSCAD script-based workflow, not interactive design interface
  • They diverge on capability: Carlson Software covers Survey data reduction, OpenSCAD covers Script-based modeling.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Carlson Software and OpenSCAD actually diverge.

Attributes where Carlson Software and OpenSCAD differ
AttributeCarlson SoftwareOpenSCAD
Starting price$4450/one-timeFree
Pricing modelOne-time purchasefree
Free tierNoYes
PlatformsWindowsWindows, 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 Carlson Software

  • Survey data reduction
  • Civil design
  • Hydrology
  • GIS module
  • Earthwork takeoff
  • IntelliCAD engine included
  • AutoCAD compatibility
  • SurvCE field software

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.

Carlson Software

  • A small surveying practice that wants to stop paying an annual Civil 3D subscription and own its CAD outrightnot OpenSCAD
  • A firm running mixed instrument brands in the field that needs data collector software not tied to one manufacturernot OpenSCAD
  • A civil consultancy doing road, site grading and stormwater design without needing an enterprise BIM environmentnot OpenSCAD
  • A land development office that renews maintenance only in years when a release actually adds something it needsnot OpenSCAD

OpenSCAD

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

Where each one falls short

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

Carlson Software

  • The perpetual licence is a larger upfront cost than a first-year subscription, which is harder to approve for a practice with tight cash flow even though it is cheaper over five years.
  • It is Windows only, so a practice on macOS has to run virtualisation, and there is no browser or mobile design client.
  • Carlson is a smaller ecosystem than Autodesk, so hiring staff who already know it is harder and training time is a real cost when a new surveyor joins.
  • Skipping maintenance saves money but leaves you on an old release, and when a client eventually sends a file from a much newer version the compatibility gap becomes your problem to solve.
  • Pricing is largely sold through resellers with figures varying by dealer and region, so the published $4,450 Civil Suite price is a reference point rather than a firm quote.

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

Carlson Software

$4450/one-time
  • Civil Suite$4450/one-time
    • Survey, Civil, Hydrology and GIS modules
    • Perpetual licence
    • IntelliCAD engine included
  • Individual modules$undefined/one-time
    • Survey, Civil, Hydrology, GIS or Takeoff purchased separately
    • Perpetual licence
    • Pricing varies by module and reseller
  • Annual maintenance$undefined/year
    • Approximately 10 per cent of purchase price
    • Optional, software continues running without it
    • Provides version updates and support

OpenSCAD

Free

No published plan breakdown. See the OpenSCAD review.

Which should you pick?

Choose Carlson Software if

  • You need survey data reduction.
  • You work on Windows.
  • You also want civil design.
Carlson Software 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 Carlson Software or OpenSCAD better?
Neither clearly leads. Carlson Software starts at $4450/one-time and OpenSCAD at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Carlson Software or OpenSCAD?
OpenSCAD has a free tier; the other does not. Paid plans start at $4450/one-time for Carlson Software and Free for OpenSCAD.
Does Carlson Software or OpenSCAD run on more platforms?
Carlson Software runs on Windows. 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. Carlson Software starts at $4450/one-time.
What is Carlson Software best used for?
Carlson Software is most often used for a small surveying practice that wants to stop paying an annual civil 3d subscription and own its cad outright, a firm running mixed instrument brands in the field that needs data collector software not tied to one manufacturer, a civil consultancy doing road, site grading and stormwater design without needing an enterprise bim environment, a land development office that renews maintenance only in years when a release actually adds something it needs. Of those, a small surveying practice that wants to stop paying an annual civil 3d subscription and own its cad outright and a firm running mixed instrument brands in the field that needs data collector software not tied to one manufacturer are not what OpenSCAD is typically brought in for.
What can Carlson Software do that OpenSCAD cannot?
Carlson Software covers Survey data reduction, Civil design, Hydrology, GIS module. OpenSCAD covers Script-based modeling, CSG operations, 2D to 3D extrusion, Parameterization.

Answered from the vendors’ own pages

Carlson Software: Is Carlson a perpetual licence?

Yes. You buy it once and it keeps running. Annual maintenance at roughly ten per cent is optional and only affects updates and support.

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
Carlson Software: Do I need AutoCAD as well?

No. An IntelliCAD engine is included. You can alternatively run Carlson on top of AutoCAD if your practice already licenses it.

Carlson Software: Does Carlson field software work with other brands of instrument?

Yes. SurvCE supports total stations and GNSS receivers from several manufacturers, which is one of the main reasons firms choose it.

Carlson Software: What does the Civil Suite include?

Survey, Civil, Hydrology and GIS, listed at $4,450.

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