N3XDParametric 3D CAD, in your browser
Battle-tested geometry kernel and a modern interface.
Written from scratch with an open source spirit.
Your N3XD cad software is just a click away.
Classic CAD, next level
Let's rethink 3D modeling.
Runs 100% in your browser
No install, no fiddly GPU drivers, no setup. Open a link and start modeling in seconds.
AI-assisted modeling
We want to dissolve the borders for building great things! From amateurs to professionals.
A full parametric kernel
Sketches, constraints, features, and assemblies on an industry-trusted OpenCASCADE core.
Yours to keep. Forever
Free for personal use and self-hostable. Project files with open format. No vendor lock-in.
A complete parametric CAD suite
Scroll through one part, from first sketch to manufacturing.
Sketching that does the math
Snapping, auto-constraints, and dimensions on a fast solver.
- Constraint-driven geometry
- Trim, offset, fillet, pattern
- Construction & reference geometry
Parametric 2D & 3D features
Extrude, revolve, fillet, and booleans; all with live previews.
- Editable feature history
- Parameters & equations
- Shell, draft, mirror & patterns
AI assistant that models with you
You can describe it? You can build it!
- Sketch, build, edit & reference
- Chat-driven modeling (cloud)
- Scriptable via MCP server
Modeling and beyond
From idea to manufacturing. We got you covered!
- Stress Simulation & Rendering
- CAM for CNC manufacturing
- Custom slicer for 3D printing
Where N3XD is heading
From today's modeling core to a full digital workshop.
Basic 3D modeling
Sketch- and 3D operations
Parameterization
Constraint- and equation solver
Assemblies
Mating parts, simulating motion
AI Assistant
Modeling, reverse-engineering, debugging
Manufacturing
Stress simulation, CAM, slicer for FDM
Large-scale assemblies
Construction site modeling, craftsman skills
Free to use, open to self-host
Personal and self-hosted use is free. Commercial deployments are paid.
Run N3XD on your own machine, free for personal projects. Forever!
- Free for personal, self-hosted use
- Full control over your own deployment
- Create issues & contribute to the source
Use N3XD in the cloud with nothing to install, free during early access, just sign up.
- Runs entirely in your browser. No setup.
- Free during the beta: just an email to start
- AI-assisted modeling and managed updates
For commercial and enterprise teams: paid plans with on-premise hosting for sensitive data.
- Paid plans for commercial use
- On-premise hosting with stricter controls
- Tailored licensing: talk to us
How N3XD compares
Parametric CAD that people and AI agents drive through the same commands.
| Product | Delivery | Feature history | AI that models | Agent access | Self-host | Entry price |
|---|---|---|---|---|---|---|
| N3XD | Browser, cloud or self-host | Yes | Full command surface, vision-checked | MCP + REST, native | Yes | Free personal, paid commercial |
| Onshape | Browser SaaS | Yes | Assistant-class advisor | REST API | No | Free public, $1,500+/yr |
| Autodesk Fusion | Desktop + cloud | Yes | Copilot assistant | Community MCP | No | Paid, ~$680/yr |
| FreeCAD | Desktop | Yes | None built in | Community MCP | Yes | Free, open source |
| Zoo Design Studio | Desktop + API | Code | Generative (text to CAD) | Text-to-CAD API | No | Free tier, paid plans |
| AdamCAD | Browser | No | Generative (text to CAD) | None public | No | Free, paid from $6/mo |
| text-to-cad | Local agent skills | Code | Via coding agents | MCP + agent skills | Yes | Free, open source |
Feature and price comparison as of July 2026. Under Feature history, Code marks a tool that is parametric through code rather than a UI-editable model. Community MCP means a third-party integration, not a vendor feature. Corrections welcome at contact@n3xd.io.
Can I get my designs out?
Yes. Import/ export STEP, STL and 3MF. Open-readable project files. No proprietary lock-in.
Is it really free?
We'll offer free cloud-managed access during early access. Self-hosting will be free forever. Later, cloud access will become paid.
Do I need to install anything?
No. N3XD runs in any modern browser, with nothing to download or configure. Mobile works in read-only mode.
Can I keep my data private?
Self-host from our open repo, or use on-premise plans for stricter control. Your ideas, your projects; they stay to you.
Is my model sent to an AI?
Only if you use the cloud AI assistant. Self-hosted and standalone N3XD make no AI calls at all.
What happens after early access?
Self-hosting stays free. Cloud plans become paid to help us cover running costs, and early users hear about it first.