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Spline logo
Spline
✓ verifiedFreemium

Browser-based collaborative 3D design tool for building and exporting interactive 3D/2D experiences to web, iOS and Android.

818K visits/mo12K saves
3DPEA logo
3DPEA
✓ verifiedFree

Free online tool that converts PNG images into 3D-printable STL models, part of 3DPEA's wider file-conversion suite.

174K visits/mo
Cascadeur logo
Cascadeur
✓ verifiedFreemium

3D keyframe animation tool with AI posing and physics; strong for game and character work, with free, indie and pro licenses.

225K visits/mo2.7K saves
Marble by World Labs logo
Marble by World Labs
✓ verifiedPaid

AI tool for generating and exploring high-fidelity, editable 3D worlds from prompts, sold via prepaid credit packages.

150K visits/mo1.3K saves
Neural4D logo
Neural4D
✓ verifiedFreemium

AI generator that turns text and images into rigged, textured 3D models for games, printing, AR and design workflows.

428K visits/mo1.8K saves
Pricing
Free: $0/month (limited files, watermarked web exports)
Starter: $12/seat/month billed annually or $15/month billed monthly (unlimited files, no watermark)
Professional: $20/seat/month billed annually or $25/month billed monthly (video/code export, unlimited variables/APIs), plus optional AI add-on at +$5/seat/month for 2,000 AI credits

No public pricing

No public pricing

Free trial available

Package A: $5 (5,000 credits)
Package B: $20 (22,000 credits)
Package C: $50 (63,000 credits)
Free: $0 (50 power per week)
7-Day Pass: $19.9/week (100 power)
Pro Monthly: $48/mo
Core features
  • Real-time collaborative 3D editor with primitives and modeling tools
  • Layer-based materials and a ready-made material library
  • Interactivity/animation via states, events and physics
  • Multi-platform export to web, iOS and Android
  • 2D design canvas (Hana) with vector networks and effects
  • AI 3D generation, texture generation and style transfer add-on
  • Variables, APIs and webhooks for dynamic data
  • PNG-to-STL conversion via pixel height mapping
  • Standard and extrude (with color) conversion modes
  • Controls for size, resolution, border and thickness
  • Color merging, smoothing and transparency handling
  • Supports many other image and 3D format conversions
  • No file storage; runs in the browser on any OS
  • AI AutoPosing for faster natural poses
  • AutoPhysics for realistic motion
  • Quick rigging and standard-skeleton support
  • Animation unbaking to make baked clips editable
  • Video motion capture and secondary motion
  • FBX/DAE/USD compatibility
  • AI-generated 3D world creation
  • World editing tools
  • Credit-based usage packages
  • Sharing generated worlds
  • Text-to-3D and image-to-3D generation
  • AI texturing
  • Rigging and animation
  • Multiple export formats
  • API access
Use cases
  • Designers adding interactive 3D elements to websites
  • Product teams prototyping 3D UI or product visualizations
  • Brand/marketing teams creating animated 3D visuals
  • Agencies building AR/XR or gamified web experiences
  • Turning logos or images into 3D-printable models
  • Creating custom reliefs and lithophane-style prints
  • Prototyping simple 3D objects from 2D artwork
  • Converting between assorted image and 3D formats
  • Animate game and film characters
  • Clean up and edit motion-capture data
  • Retarget animations between characters
  • Generating 3D environments for creative or game projects
  • Prototyping virtual scenes without manual 3D modeling
  • Sharing AI-generated worlds with others
  • Generate 3D models for games
  • Create printable 3D assets
  • Produce 3D content for AR/VR and design
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