OpenSCAD is rather unique; you draw parts by programming them in code, which I never personally hitched horses with. Neat if gimmicky idea.
FreeCAD is trying to be all things to all people and achieving it extremely slowly. You can code parts in Python, and it has an OpenSCAD workbench, though my personal preference for workflow is Part Design; drawing 2D shapes and then extruding them into 3D.
Blender is another option, probably preferable for hand-sculpting/art/etc.