Categories
📐 Free CAD and Engineering Design Software
CAD is among the most expensive software categories, and the one with the most "free for personal use, license required for business" traps. Everything here is open source and equally free commercially, with no watermarked or crippled exports — suitable for 3D printing, electronics, mechanical design and home planning.
11 tools
Dune 3D
SolveSpace-style constraints, plus the STEP support and fillets SolveSpace lacks
- Open Source
- No Ads
- No Tracking
- Offline
LeoCAD
Build LEGO models on screen, then export the parts list and go buy the bricks
- Open Source
- No Ads
- No Tracking
- Offline
UltiMaker Cura
A slicer that shows you four settings by default, with a plugin marketplace as its trump card
- Open Source
- No Ads
- Offline
- No Sign-up
FreeCAD
Parametric 3D modeling — change one dimension and the whole model follows
- Open Source
- No Ads
- No Tracking
- Offline
KiCad
Schematic capture, PCB layout and fab files — the whole chain, free
- Open Source
- No Ads
- No Tracking
- Offline
LibreCAD
2D drafting only — light, fast, and it speaks DXF
- Open Source
- No Ads
- No Tracking
- Offline
OpenSCAD
Model by writing code — changing a parameter beats dragging a mouse
- Open Source
- No Ads
- No Tracking
- Offline
OrcaSlicer
Turns models into printer paths, and helps you calibrate the machine
- Open Source
- No Ads
- No Tracking
- Offline
PrusaSlicer
The stable one — and the ancestor of several other slicers
- Open Source
- No Ads
- No Tracking
- Offline
SolveSpace
Parametric CAD in a few megabytes, opening instantly
- Open Source
- No Ads
- No Tracking
- Offline
Sweet Home 3D
Draw the floor plan, then walk through it
- Open Source
- No Ads
- No Tracking
- Offline