Spline
Design · Free · since 2020
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Spline is a 3D design tool for the web with real-time collaboration and easy export to web formats. It handles 3d design, web export, interactions, and real-time collab, and it's best suited for designers who want 3d on the web. It has been around since 2020, giving it a 6-year head start in building out integrations and refining the product.
The free plan is free for 2 projects — enough for most people to evaluate whether it fits. It's designed for small teams, striking a balance between simplicity and collaboration features.
pros
- Browser-based 3D design — no heavy software install required
- One-click export to web formats (HTML, React, iframes) for production use
- Free for 2 projects — generous enough for most small teams to get real work done
- Includes interactions alongside the core feature set — fewer separate tools needed
cons
- Free plan exists but key features are locked behind the paid upgrade
- Fewer built-in features means you may need additional tools to cover gaps
- Output quality depends on your design skills — templates only go so far
- Limited team/admin features if your organization eventually scales up
top Spline alternatives
Canva Online graphic design platform with templates for social media, presentations, and marketing materials. Free 
Adobe XD UI/UX design and prototyping tool from Adobe, integrated with Creative Cloud. $9.99/mo 
Framer Motion Open-source animation library for React with declarative syntax and gesture support. Free 
InVision Digital product design platform for prototyping, collaboration, and design system management. Free 
Miro Online collaborative whiteboard platform for brainstorming, planning, and design. Free Spline compared
Figma vs Spline · Penpot vs Spline · Sketch vs Spline · Canva vs Spline · Adobe XD vs Spline · Spline vs Framer Motion · Spline vs InVision · Spline vs Miro
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Figma Browser-based collaborative design tool for UI/UX design, prototyping, and design systems. Free 
Penpot Open-source, browser-based design and prototyping platform. Self-hostable. Free 
Sketch Mac-native design tool for UI/UX with a focus on simplicity and performance. $10/editor/mo Canva Online graphic design platform with templates for social media, presentations, and marketing materials. Free Adobe XD UI/UX design and prototyping tool from Adobe, integrated with Creative Cloud. $9.99/mo Framer Motion Open-source animation library for React with declarative syntax and gesture support. Free