FreeCAD
Truly freeOpen-source parametric 3D modeler
Free tier & pricing
Fully free and open source with no sign-up or paywall; includes a dedicated BIM/architecture workbench plus general 3D parametric modeling.
Last verified Jun 23, 2026. Report a change →
The short answer
FreeCAD is a free, open-source parametric 3D CAD modeler with a BIM workbench for architectural work. Reads and writes STEP, IGES, DXF, IFC, OBJ.
The facts
- Pricing
- Free · Truly free
- Free tier
- Yes
- Runs in browser
- No
- Platforms
- Windows, macOS, Linux
- 2D / 3D
- Basic 3D
- Learning curve
- Moderate
- Export formats
- DXF, OBJ, STL
The catch
No major catches — this one’s refreshingly straightforward.
Best for
Hobbyists and engineers wanting free parametric CAD/BIM