Diamond is a molecular and crystal structure visualization software. It only draws nice pictures of molecular and crystal structures, but also offers an extensive set of functions that let you easily model any arbitrary portion of a crystal structure from a basic set of structural parameters (cell, space group, atomic positions).
v4.1 [Nov 22, 2015]
Acceleration of structure picture drawing. Anti-aliasing.
Selection filter for object types to avoid inadvertent matching of wrong objects
Atom design can be assigned to individual sites (rather than to atom groups only)
Enhanced construction from atoms or bonds
