Dr Al
Established Member
Alibre could be better for top-down modelling but I've never felt particularly restricted when using it in that way. I tend to avoid free stuff from commercial companies because there's no guarantee it will continue....
Yes the risk-averse tendency was one of the reasons I bought ZW3D rather than just using Onshape for everthing. For a while I used FreeCAD (which is free but not from a commercial company and does everything and more that Alibre could do when I compared them). The lack of top-down modelling was too much of a constraint though and I stumped up the (one-off) cash for ZW3D. I understand that the FreeCAD developers are working on assemblies and top-down modelling, but they weren't there yet when I was trialling the various different options.