Best is Fusion360, free version. Windows & Mac only. Can run in VM.

Few quality CAD programs are true FOSS, but theyre available like FreeCAD or OpenSCAD.

1. TinkerCAD https://tinkercad.com/

- free webapp, great to start & learn if zero skills, ages 4+

2. FreeCAD https://freecad.org/

- free, runs locally, FOSS, but its clunky. Does work though

3. OpenSCAD https://openscad.org/

- free, runs locally, much more programming-based, clunky but wow is it powerful!!!

4. Fusion360

- free version, cloud based, most used CAD program

5. Solidworks

- free version, cloud based, most commercially used CAD

6. Blender https://blender.org/

- free, FOSS, ginormous community, most powerful of them all, steepest learning curve, highest reward if you learn imo

There are others but these are the best & most used imo