Piero Macchi's XD page
Paul Mallinson's XD page
Crystallography at SUNY at Buffalo
IUCr Commission Charge, Spin and Momentum Densities
Atoms and Molecules ( R. Bader's site)
The Official Gaussian Home Page
GAMESS (US) Home Page
GAMESS (UK) Home Page
Chemistry programs from Schrödinger.com
Q-Chem, Inc. Developer and Provider of Quantum Chemistry Software
CRYSTAL Home Page
CRYSTAL98 Resources Page
MORPHY98 - a program for the topological analysis of the electron distribution
Steffen Webber and XD programs
HASYLAB - Electronic Charge Density Studies
Electron Localisation Function ELF - Home page