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AR VR · head to head

Three.js vs Varjo

Three.js logo

Three.js

AR VR

JavaScript 3D library for WebGL and WebXR

From
Free
Rated
-
Full reviewWebsite
Varjo logo

Varjo

AR VR

Human-eye resolution VR/XR headsets

From
$2495/one-time
Rated
-
Full reviewWebsite

The short version

  • Only Three.js has a free tier, so it costs nothing to try first.
  • Each has a real cost: Three.js forward rendering pipeline only, no deferred rendering support; Varjo high cost enterprise XR solutions
  • They diverge on capability: Three.js covers WebGL rendering, Varjo covers Human-eye resolution.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

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

Attributes where Three.js and Varjo differ
AttributeThree.jsVarjo
Starting priceFree$2495/one-time
Pricing modelfreeone-time
Free tierYesNo
PlatformsWeb, macOS, Windows, Linux, iOS, AndroidXR headsets, Windows
Founded20102016

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

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 Three.js

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

Only in Varjo

  • Human-eye resolution
  • Mixed reality
  • Eye tracking
  • Hand tracking
  • Unity
  • Unreal
  • OpenXR
  • SteamVR

What people use each for

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

Three.js

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

Varjo

  • Military flight simulation and pilot trainingnot Three.js
  • Vehicle operation and weapons trainingnot Three.js
  • Maritime navigation trainingnot Three.js
  • High-fidelity professional VR simulationnot Three.js

Where each one falls short

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

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

Varjo

  • High cost enterprise XR solutions
  • Specialized for military and simulation training use cases only

Pricing, plan by plan

Three.js

Free
  • FreeFree
    • Full library
    • WebXR module
    • Examples

Varjo

$2495/one-time
  • Varjo XR-4$3990/one-time
    • Human-eye resolution
    • Mixed reality
    • Eye tracking

Which should you pick?

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

Choose Varjo if

  • You need human-eye resolution.
  • You work on XR headsets, Windows.
  • You also want mixed reality.
Varjo review

Questions people ask

Is Three.js or Varjo better?
Neither clearly leads. Three.js starts at Free and Varjo at $2495/one-time, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Three.js or Varjo?
Three.js has a free tier; the other does not. Paid plans start at Free for Three.js and $2495/one-time for Varjo.
Does Three.js or Varjo run on more platforms?
Three.js runs on Web, macOS, Windows, Linux, iOS, Android. Varjo runs on XR headsets, Windows.
Can I use Three.js for free?
Yes. Three.js has a free tier, so you can try it without paying. Varjo starts at $2495/one-time.
What is Three.js best used for?
Three.js is most often used for vr gaming, ar marketing, virtual training, 3d visualization. Of those, vr gaming and ar marketing are not what Varjo is typically brought in for.
What can Three.js do that Varjo cannot?
Three.js covers WebGL rendering, Scene graph, Materials system, Animation system. Varjo covers Human-eye resolution, Mixed reality, Eye tracking, Hand tracking.

Answered from the vendors’ own pages

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
Varjo: Does Varjo publish pricing information on their website?

No. Varjo does not publish specific pricing on their website and directs interested customers to contact their sales team or book a demo.

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
Varjo: How can I get pricing information from Varjo?

Varjo requires direct contact with their sales team. Customers can either request a demo or fill out a contact form to discuss pricing with a representative.

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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