3D Software (Free to almost free)(Great reviews)(Only MacClassic and Windows - however)

Download Free 3D Software
http://www.artifice.com/free/dw_lite.html

The complete freeware DesignWorkshop Lite software package provides all you need to build your own 3D models for home design and visualization of architecture, landscapes, exhibits, or any kind of spatial design. With DesignWorkshop Lite you can view and walk-through ready-made models of any size, like the free 3D building models in the Great Buildings Online, in DXF, DesignWorkshop, or 3DMF format, with amazing live 3D speed.

DesignWorkshop Lite is also available in an expanded ESD download package for just $9.95 including complete documentation, tutorials, and additional example building models all in one, with instant online ordering, immediate secure downloading, and 24 hours/7 days a week live customer service. You can also get DesignWorkshop Lite on a convenient CD-ROM, dual platform for both Macintosh and Windows 95/98/ME/NT/XP/2000. This amazing CD-ROM with over 150MB of good stuff is just $19.95 including the full online User Guide and Tutorials, a handy selection of 3D library objects and textures, project examples and additional 3D building models, Metric and Japanese versions of DesignWorkshop Lite, and useful software accessories.
You can get your own DesignWorkshop Lite CD-ROM anytime using our quick and easy Secure Online Ordering.
DesignWorkshop Lite can be used on any Macintosh in the Classic environment, or any Pentium PC running Windows 95/98/ME/NT/XP/2000, with a recommended minimum of 32MB of real RAM for complete functionality. Your monitor should be set to at thousands or millions of colors (16, 24, or 32 bit color).
Download sizes range from 5MB to 7MB.