From Robert Webb:
View polyhedra and 4D polytopes. Hundreds provided (Platonic, Archimedean, Kepler-Poinsot & all other uniform polyhedra, Johnson Solids, Stewart toroids, compounds, geodesics), plus all 1849 uniform 4D polytopes (the only place all these can be seen). Rotate in 3D, print nets to make your own paper polyhedron models. Put photos on faces. Create new polyhedra: stellation, faceting, zonohedra, dual-morphing, augmentation. Watch 3D cross-sections of 4D polychora morphing as the slicing hyperplane cuts deeper through the polytope. See 4D polytopes projected into 3D, rotate them in 4D, and see their 3D nets. Export to 3D formats. See it all in true 3D if you have red-blue glasses. Stella4D was built on the much-admired Great Stella, now adding the four-dimension to the equation.
What's new in this version:
Changes in version 5.4
Each built-in polyhedron now has a link to my paper model online (where applicable).
Added Coxeter symmetry notation
Ability to cut one edge in a net, not just a whole edge type
1) Beautiful, smooth graphics, including 3D! (seriously!) 2) Packed with features - never ever run out of variety 3) Educational and fun for the family: prints everything you need to build your own polyhedra from scratch!
1) A little pricey for the general public. I think a lower price would actually bring more revenue - and it's a shame that there are people who won't get to experience something that could literally change the way they look at their world, and spark interest in science and mathematics, because of the hefty price tag. 2) Ideally, should be open source. The author has done incredible work, there is no doubt about that. But to make it more open - even just a plugin architecture - would open the doors to the unimaginable possibilities that other talented developers and mathematicians could contribute! 3) Not well known enough. Not exactly a con, but: Please Advertise!
Bring the beauty of Mathematics to life in 4 dimensions! Incredibly powerful and feature-rich: every time you open it you will learn something new and amazing that you've literally never seen or imagined before! This program is, frankly, a masterpiece.