Choose FreeCAD for
- Constraint-driven sketches with a full geometric solver.
- Technical drawings, analysis and specialist workbenches.
- Offline work and scripting with its Python API.
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A Browser Alternative to FreeCAD for Everyday Parts
FreeCAD is a powerful open-source desktop CAD tool. VIZON gives you parametric part modeling on the same OpenCascade kernel family, in a browser tab, with AI on top.
About FreeCAD
FreeCAD is a free, open-source parametric 3D CAD application for Windows, macOS and Linux. It is organised into workbenches such as Part Design, Sketcher with geometric constraints, TechDraw for drawings and FEM for analysis.
Choose VIZON for
- Nothing to install: open a link on any computer.
- A short learning curve: sketch, extrude, hole, fillet, pattern.
- AI that writes and edits the feature list from plain English.
- Mesh editing, materials and sharing in the same place.
FreeCAD and VIZON side by side
| FreeCAD | VIZON | |
|---|---|---|
| Runs in | Desktop app | Web browser |
| Cost | Free, open source | Free to start, included with Zimension |
| CAD kernel | OpenCascade | OpenCascade (WebAssembly) |
| Sketch constraints | Full constraint solver | Dimensioned entities |
| Drawings and FEM | Yes | No |
STEP files move cleanly between the two, since both are built on OpenCascade.
Frequently asked questions
Can I open FreeCAD files in VIZON?
Export STEP from FreeCAD and open the STEP in VIZON, where you can add features on top.
Is VIZON open source?
No. VIZON is a hosted product from Zimension; FreeCAD is the open-source choice.
Start with these VIZON tools
See if VIZON fits your work
It runs in your browser, so trying it takes a minute, not an install.