VESTA is a 3D visualization program for structural models and 3D grid data such as electron/nuclear densities.
VESTA runs on three major platforms, Windows, Mac OS X, and Linux.
ERIS is a program for calculation of distributions of electron/nuclear densities and Patterson functions from observed structure factors by means of the maximum entropy method (MEM). It is a successor of MEM calculation programs Dysnomia, PRIMA, and ALBA.
Deprecated
Dysnomia is a program for calculation of electron and nuclear densities from observed structure factors by means of the maximum entropy method (MEM). It is a successor of a MEM program PRIMA.
CrystalMAP is a Java applet for visualization of crystal morphologies in a web browser. It can draw any single crystals, and most of twinned and epitaxial crystals.
A tiny utility to visualize powder diffraction patterns output by Rietan-FP.