Browsers see them as GIFs, but the structural info is in there for ChemWeb. Review by John R. L. Walker, Univ. of Canterbury. Draws different electron clouds for various hydrogen energy states. You specify L and M variables, and it draws 2D or 3D clouds of electron probability. An interesting tool to play with and learn about orbitals.
Balloon help is available, but is spotty.
It draws colored balls for atoms, but no bonds. The coordinate command does not contain a z coordinate for each atom. The program allows lots of control over color, brightness, light placement, and mouse manipulation of view direction. It is also capable of producing video output for recording. 1.7 One of the earliest molecular viewing programs for the Mac.