Crystallographic software:

Bilbao Crystallographic Server

CrysFML library

Crystals 

GSAS-2

FULLPROF 

ISOTROPY software suite

IUCr crystallographic software directory

JANA 2000

SHELX 

TOPAS Academic

Crystallography tutorials:

TOPAS Academic Tutorials (John Evans)

Structures of simple inorganic solids (S.J. Heyes)

Pictures of common structures (Ira Bershtein)

UNM XRD resources (Jim Connolly)

Crystal symmetry tutorial (Pat Woodward)

IUCr Education resources

Miscellaneous Resources

American Institute of Physics (AIP)

BYU Gandolfi-type sample spinner

BYU X-ray diffraction animation

Caltech Library science links

Chemseer chemistry journal links

Cornell preprint archive

Crystallography Online Database

Flash crystal viewer

ILL structure library

Physlink home

Physlink physics departments

PhysicsWorld

Neutron Scattering Web

Webelements.com

Web Mineral: crystal structure library

Web of Science