Fungimol is Tim Freeman's extensible system for designing atomic-scale objects. The intent is to eventually extend it to be a useful system for doing molecular nanotechnology design work. At the moment it's a PDB file viewer and Buckminsterfullerine editor.

Fungimol (including this document) is distributed under the terms of the GNU Library General Public License. This license is flexible enough to permit creating proprietary plugins under certain circumstances. Binary versions of Fungimol link with other software that has other licenses.

Here is an animation that Freeman has done with Fungimol:

External Link