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- Rhino for Mac http://www.rhino3d.com/mac
(Rhino for Windows has still more functionality, but is not for freefree for 3 months) - processing (P3D, dxf export, peasycam, controlp5, toxiclips) https://processing.org/download/
- https://tinkercad.com
- Meshmixer (free)
www.meshmixer.com/
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