Electric Rain has released Swift 3D 6.0 a) for the Mac and Windows.
It’s an update of the standalone version of the 3D modeling and
animation tool.

This simultaneous dual-platform release offers such new features as:
3D Boolean operations; background image tracing; 5X faster raster
rendering speed; an advanced UV Texture Mapper; Papervision3D 2.0
support and more. Your Swift 3D version 6 serial number is now
universal and will work on either platform, giving you the freedom to
use Swift 3D on both platforms.

Swift 3D 6.0 comes in a variety of pricing options and bundles. You
can find them here: https://www.erain.com/store/?erain=june2009