WM3D is a flash11 molecular viewer for various kinds of molecules. This viewer is based on Watermelon and a sample program written by Nicolas Cannasse. Molecules can be shown in spheres, sticks, tubes, and ribbons.
Here are some sample screenshots of WM3D. (i couldn't embed flash11 swf files to this wiki. see sample swfs in src/samples.)
(2012/3/17)Sample movie is available on the project webpage.
WM3D is licensed under MPL1.1/GPL2.0+/LGPL2.1+ trilicense.
WM3D is tested only on Linux (Debian/squeeze Fedora15) and Windows XP. It may be possible to use in other platforms, although not tested.
See wiki:wm3d/Setup for details.
See wiki:wm3d/HowToUse for details.
WM3D is, honestly speaking, not a user-friendly program, especially for Windows users. A plugin for VMD is prepared, which works both on Windows and Linux.
See wiki:wm3d/VMD_Plugin for detail.
edit