tetrahedron |
octahedron |
cube |
icosahedron |
dodecahedron |

cuboctahedron |
truncated octahedron |
great rhomb- icosidodecahedron |
icosidodecahedron |
truncated icosahedron |

great icosahedron |
Tetrahedron FiveCompound |
Tetrahedron TenCompound |
CubeFiveCompound |

tetrahedral sponge |
octahedral sponge |
menger sponge |
stellated sponge |

Sam Gratrix's very nice (but complicated a bit :) WebGL Uniform Polyhedra (listed by Wythoff Symbols).

See also Java based Interactive polyhedra and George W. Hart's "Encyclopedia of Polyhedra".

WebGL examples