Parkcad 5.0 Free Download |work| Page

You don't need ParkCAD. Create a dynamic block in vanilla AutoCAD for a parking stall. Use the "Array" action and "Distance" parameters. With 30 minutes of YouTube tutorials, you can build a parametric parking generator yourself.

There is no direct open-source clone of ParkCAD, but you can achieve similar results using: parkcad 5.0 free download