Pedagoguery Software has released Poly 1.21. This educational title allows users to build and explore polyhedra. According to Pedagoguery Software:
With Poly, you can manipulate polyhedral solids on the computer in a variety of ways. Flattened versions (nets) of polyhedra may be printed and then cut out, folded, and taped, to produce three-dimensional models.
Changes since the previous version:
Fixed a bug that could introduce data corruption to GIFs with more than 64K of data in one frame.
Added scrollbars to the preview window.
Poly 1.21 is available for US$28. You can find more information at the Pedagoguery Software web site.