Flux 2.0 is live

Design in 3D .
Ship to web.

A collaborative design tool for the browser. Create organic shapes, interactive scenes, and export production-ready React components in seconds.

Used by 10k+ designers
npm install @flux/react-three-fiber
scene.flux — Edited
Material
Roughness 0.4
Metalness 0.8

Flux is the native engine for the spatial web. Built for performance using WebGPU, enabling designers to construct fidelity-first experiences without writing a single line of shader code.

0 FPS

Consistent Performance

0 MB

Runtime Weight

0 +

Community Assets

0 s

Export Time

The Toolkit

Everything you need to build immersive 3D web experiences.

Real-time Physics

Simulate rigid bodies, soft bodies, and constraints directly in the browser.

onClick={() => fire()}
onHover
onFocus

Event System

Declarative events for 3D objects. Handles raycasting and hit testing automatically.

JD
Just now
Can we make this texture more responsive?
Sarah
John
S
J
+2
Live

Multiplayer by Default

Work together in real-time. See cursors, share component states, and leave comments directly in 3D space. No more screen sharing.

  • Live cursor tracking
  • Threaded spatial comments
  • Version history & rollback

Optimized for Production

Flux isn't just a prototyping tool. Our engine automatically optimizes geometries, compresses textures, and bakes lighting for maximum runtime performance.

GEOMETRY
TEXTURES
LIGHTING
Production
Mesh Instanced
Tex KTX2
Light Baked
-85% Size

"Nucleus transformed how we ship software. We went from monthly releases to shipping 15 times a day ."

User
Alex Richardson
CTO at TechFlow

"Deployments used to be stressful events. Now it’s just part of our daily flow — fast, safe, and predictable."

User
Priya Sharma
Head of Platform Engineering

"We cut release risk dramatically and our team finally has time to focus on features instead of firefighting."

User
Diego Alvarez
VP of Engineering

"The developer experience is unmatched. It feels like the platform reads my mind."

Sarah Chen, Lead DevOps

"Finally, a tool that bridges the gap between our dev and ops teams effectively."

Marcus Johnson, VP Engineering

Pricing Plans

Monthly Annual Save 20%
Hobby
$0
/mo
  • 3 Published Scenes
  • Basic WebGL Export
  • Community Assets
Pro
$470
/yr
Popular
  • Unlimited Private Scenes
  • 4K Texture & Video Export
  • Physics Engine Access
Teams
Custom
  • Organization Management
  • SSO & SAML Auth
  • Dedicated Rendering Cluster

Open source via Apache 2.0 license for non-commercial use.