Great Stella is the ultimate tool for creating, visualising, and printing nets for polyhedra. See my paper Stella: Polyhedron Navigator for a detailed account of what it can do.

Great Stella Features:
Includes all features from Small Stella (see above).
Built-in models (in addition to those from Small Stella):
All uniform polyhedra (see photos)
Any regular-faced prisms and antiprisms (not just the convex ones. See photos)
Any regular-faced pyramid, cupola, cuploid or cupolaic-blend (see example photo)
A library of over 400 other models is also included, created using the tools available in Great Stella. This contains most of Brckner's 1906 polyhedra, and has a category for compounds (see example photos), including:
2, 4, 5, 6, 8, 10, 20 and 40 tetrahedra.
2, 3, 4, 5, 6, 8 and 20 cubes/octahedra.
2, 5 and 8 dodecahedra/icosahedra.
2 and 5 small stellated dodecahedra/great dodecahedra/great stellated dodecahedra/great icosahedra.
3, 4 and 5 cuboctahedra.
2 and 5 icosidodecahedra.
4, 5 and 20 tetrahemihexahedra.
and many many more.
Duals of any model are available.
Nets for dual-morphed models can be printed.
Compounds of polyhedra with their duals (including nets).
Stellations (see example photos):
Any model may be stellated, leading to trillions of new polyhedra. For example, the 59 icosahedra, the 227 triacontahedra, and stellations from Magnus Wenninger's Polyhedron Models book.
Stellation is very fast, and generally takes less than a second for even the most complex uniform polyhedron.
By default, stellation cells are automatically chosen to recreate the original uniform polyhedron. This makes nets for uniform polyhedra easy to obtain, and would be difficult and time-consuming to do by hand.

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