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OpenSCAD vs Three.js

OpenSCAD logo

OpenSCAD

CAD

The programmers solid 3D CAD modeler

From
Free
Rated
-
Full reviewWebsite
Three.js logo

Three.js

AR VR

JavaScript 3D library for WebGL and WebXR

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: OpenSCAD script-based workflow, not interactive design interface; Three.js forward rendering pipeline only, no deferred rendering support
  • They diverge on capability: OpenSCAD covers Script-based modeling, Three.js covers WebGL rendering.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which OpenSCAD and Three.js actually diverge.

Attributes where OpenSCAD and Three.js differ
AttributeOpenSCADThree.js
PlatformsWindows, macOS, Linux, WebAssemblyWeb, macOS, Windows, Linux, iOS, Android
CategoryCADAR VR
Founded20092010

Identical on both: starting price (Free), pricing model (free), free tier (Yes), user rating (Not yet rated).

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 Three.js

  • WebGL rendering
  • Scene graph
  • Materials system
  • Animation system
  • WebXR
  • Post-processing
  • Physics
  • Loaders

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 Three.js
  • Technical design with scripted control over geometrynot Three.js
  • Procedural model generationnot Three.js

Three.js

  • VR Gamingnot OpenSCAD
  • AR Marketingnot OpenSCAD
  • Virtual Trainingnot OpenSCAD
  • 3D Visualizationnot OpenSCAD
  • Immersive Experiencesnot 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)

Three.js

  • Forward rendering pipeline only, no deferred rendering support
  • No built-in collision detection or spatial indexing, requiring external physics libraries
  • WebGL dependency means no support for non-WebGL environments

Pricing, plan by plan

OpenSCAD

Free

No published plan breakdown. See the OpenSCAD review.

Three.js

Free
  • FreeFree
    • Full library
    • WebXR module
    • Examples

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 Three.js if

  • You need webgl rendering.
  • You want to start without paying.
  • You work on Web, macOS, Windows, Linux, iOS, Android.
  • You also want scene graph.
Three.js review

Questions people ask

Is OpenSCAD or Three.js better?
Neither clearly leads. OpenSCAD starts at Free and Three.js at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, OpenSCAD or Three.js?
OpenSCAD starts at Free and Three.js at Free.
Does OpenSCAD or Three.js run on more platforms?
OpenSCAD runs on Windows, macOS, Linux, WebAssembly. Three.js runs on Web, macOS, Windows, Linux, iOS, Android.
Can I use OpenSCAD for free?
Both have a free tier, so you can try either at no cost before committing.
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 Three.js is typically brought in for.
What can OpenSCAD do that Three.js cannot?
OpenSCAD covers Script-based modeling, CSG operations, 2D to 3D extrusion, Parameterization. Three.js covers WebGL rendering, Scene graph, Materials system, Animation system.

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
Three.js: Is Three.js free to use?

Yes. Three.js is released under the MIT license, an open-source license that permits unlimited commercial and personal use with no licensing fees.

Source
Three.js: Does Three.js include physics simulation?

No. Three.js is a rendering library only. Physics, collision detection, and spatial indexing must be implemented with external libraries like Rapier, Ammo, or JoltPhysics.

Source
Three.js: Can I use Three.js for offline development?

Yes. Local development requires a local web server for CORS compliance. You can use npm with a build tool like Vite, or run a local Python server for development.

Source
Three.js: Does Three.js support WebXR for VR/AR?

Yes. Three.js documentation includes WebXR APIs for building VR and AR experiences in web browsers.

Source
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