SolveSpace
Truly freeFree parametric 2D/3D CAD
Free tier & pricing
Fully free and GPLv3 open source with no install required on Windows; geared to mechanical/geometric parts rather than full BIM.
Last verified Jun 23, 2026. Report a change →
The short answer
SolveSpace is a small free parametric 2D/3D CAD tool with a constraint solver, useful for modeling parts and 2D sections.
The facts
- Pricing
- Free · Truly free
- Free tier
- Yes
- Runs in browser
- No
- Platforms
- Windows, macOS, Linux
- 2D / 3D
- No 3D
- Learning curve
- Moderate
- Export formats
- DXF, PDF, SVG, STL
The catch
No major catches — this one’s refreshingly straightforward.
Best for
Lightweight free parametric modeling