American Mineralogist Crystal Structure Database
Biological Macromolecule Crystallization Database
Cambridge Structural Database?(CSD)
Crystallography Open Database
ICDD Powder Diffraction File database
Inorganic Crystal Structure Database
Macromolecular Crystallographic Information File?(mmCIF)
Materials Project
Nucleic Acid Database?(NDB)
Pauling File
Protein Data Bank?(PDB)