Crystallography related websites
APS Powder Diffraction Crystallography Resources Excellent tutorials by Dr. Brian Toby at APS/ANL.
CCP14 Homepage Crystallography and CCP14 Tutorial List
CCP14 - Automatic Divergence Slits (ADS), Data Correction, Rietveld Analysis (and In2O3 as a Reference Material)
International Union of Crystallography and IUCr Newsletter
Indexing a powder X-ray diffraction pattern.
CCP14 Available Rietveld Software - poster-talks
ICDD.com
CCDC- Cambridge Crystallographic Data Centre Structural Database, Dash and other crystallographic programs.
ICSD Usergroup
ICSD for WWW
(IUCr) Structure Reports help with preparing CIFs
The American Mineralogist Crystal Structure Database contains cif files of many crystal structures
Miller IndicesExplanations with diagrams.
Crystal Planes, Miller Indices, Conventions
Determination of Reduced Cells in Crystallography
Theoretical Density
Mineralogy DatabaseInformation on the structures of minerals/solid state compounds.
Science - Physics - Crystallography
Space Group Frequency at Texas A&M
Crystallographic Space Group Symmetry Tables
Point Group Tutorial by Emory University.
Group-Subgroup relationships
Symmetry Tutorial Group theory
Crystallography Journals, Societies and Associations
Isostatic Pressing
Worked examples in the Geometry of Crystals, the 2nd edition (Univ. Cambridge)
Texas A&M Chemistry Lab
Dr. Allen Hunter - Youngstown State University - XRD Manuals
X-ray safety - Univ. Oklahoma
Programs and methods in SDPD
GSAS VRML
GSAS Powder Fourier Map
Springer - Modern Crystallography 2 - by Boris K. Vainshtein, et al.
ICMCB
Magnetic form factors
ICSD - Crystal Structure Deposition
Superspace Groups
(3+1) dimensional superspace groups
Rietveld R and fit factors
3M Materials Science Lab and George L. Clark X-ray Facility and x-ray software
Powder diffractometers performances as estimated by the Rietveld method
Atomic Scattering Factors
Neutron scattering lengths and cross sections
Combined X-ray Neutron Rietveld
Setting up POLA or IPOLA and POLA correctly for a powder XRD system containing a diffracted beam Graphite Monochromator in GSAS
Structure Determination by Powder Diffractometry Course
X-ray Basics - Elves
Fullprof Tutorial
NCNR CALL FOR PROPOSALS
BT1 Schedule
Anomalous Dispersion (fprime) Calculations
NCNR Crystallography Resources
Univ. Ohlahoma - Crystallography lab
PCG Rietveld School 2008 Tutorials - Y2O3 - Fullprof
Equation for Bond distance in any crystal system
d² = (x₁ - x₂) ²a² + (y₁-y₂)²b² + (z₁-z₂)²c² + 2(x₁-x₂)(y₁-y₂)ab cos g + 2(y₁-y₂)(z₁-z₂)bc cos a +2(z₁-z₂)(x₁-x₂)ca cos b

International Diffraction and Scattering Facilities
ANL Neutron Scattering Facilities
NIST Center for Neutron Research
CERN
ANSTO - Australian Nuclear Science and Technology Organisation
ILL - Institute Laue-Langevin D20
ESRF
ISIS Pulsed Neutron and Muon Source
Neutron Cross Sections
LANL - Lujan Center Instrument Suite and HIPD
X-ray Powder Beamlines

Software

Software Listings
CCP14 Methods, Problems and Solutions
Sincris and archive Sincris
Bilbao Crystallographic Server Misc Cryst Web Software
Refinement Packages Available
Crystal.org - ALB Crystallography Home Page
Solid State Chemistry Resources UNM
Software - Crystallography Laboratory at Virginia Tech

Data Conversion
Powdll converts between various file formats and is periodically updated.
Powder 2.0 Convert various data files types.

Powder Diffraction indexing
McMaille
CNR Institute of Crystallography EXPO2009 and EXPO2009 forums
Chekcell

Rietveld Refinement
FullProf
Jana 2000
GSAS+EXPGUI on CCP14 and EXPGUI GSAS at NIST
Rietica Rietica refinement program.
CNR Institute of Crystallography EXPO2009 and EXPO2009 forums
Rietveld Mailing list at the ILL

Structure Visualization
Crystal Impact Diamond
Atoms for Windows

Other software
SPuDS - a program to calculate the crystal structures of perovskites.
ISOTROPY Software program to display information on space groups, irreducible representations, isotropy subgroups and phase transitions.
Calidris - Space group explorer
CMPR
PowderCell
PLATON
Carine
GULP General Utility Lattice Program
Crystallography Centre Oscail - Windows based software for single crystal and powder diffraction
Accelrys (Molecular Simulations Inc) Software and solutions for Scientists including Cerius2, CASTEP.
Cambridge Software
CASTEP info.
Powf Software
DISCUS - PDF
LAPOD