Molecular modelling, dynamics and design
Introduction to molecular dynamics simulation
Video intro to molecular dynamics simulations Watch!
Wiki page: https://en.wikipedia.org/wiki/Molecular_dynamics
Geometry (energy) optimization is a typical feature of these software
Software:
Chimera molecular modelling software system. Nice
Delphi Electrostatic fields
Ascalaph designer and abalone. Tutorial
http://proteopedia.org/wiki/index.php/Molecular_modeling_and_visualization_software
http://nanohub.org/resources/4540
https://en.wikipedia.org/wiki/Molecule_editor
https://en.wikipedia.org/wiki/List_of_software_for_Monte_Carlo_molecular_modeling
https://en.wikipedia.org/wiki/List_of_software_for_molecular_mechanics_modeling
https://en.wikipedia.org/wiki/List_of_software_for_nanostructures_modeling