SpaceClaim (before it was even ANSYS) has been our tool of choice for all mechanical design. It is a very capable 3D CAD system. My company has released hundreds of sheet metal, injection molded, and machined parts/products designed and implemented all the way through concept to release in SpaceClaim. The direct and modeling tools are incredibly powerful. The fabulously versatile "Pull" tool has no equal in any other CAD package I have used. I have used Fusion360 pretty extensively. SpaceClaim requires far fewer "clicks" and menu traverses to get the same job done and generally is 20-50% faster to model any given part.
Based on our record, Cardbox - 3D Box Visualization seems to be more popular. It has been mentiond 1 time since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
I can't speak to how to make the cards, but for boxes, I use https://cardbox3d.com/. Source: about 1 year ago
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