Scientific Associations

• IUCr International Union of Crystallography
  Joins together with 29 other scientific unions to ICSU (International Council for Science)
• IOCG International Organization for Crystal Growth
• ACA American Crystallographic Association
• AfCA African Crystallographic Association
• AsCA Asian Crystallographic Association
• AFC Association Française de Cristallographie
• BCA British Crystallographic Association
• DGK Deutsche Gesellschaft für Kristallographie
• ECA European Crystallography Association
• ECA General Interest Group of Young Crystallographers
  Aims to coordinate and stimulate the scientific activity of young European crystallographers under-35
• GE3C Grupo especializado de Cristalografía y Crecimiento Cristalino (Spagna)
• SIF Società Italiana di Fisica
• SILS Società Italiana Luce di Sincrotrone
• SIMP Società Italiana di Mineralogia e Petrologia
• SSCr Swiss Society for Crystallography

Meetings and schools of crystallography

• Scuole di Erice
  The International School of Crystallography is a forum to bring together the leaders of the various fields of crystallography with promising young students from around the world for an intensive learning experience that they are unlikely to get anywhere else. Crystallographers cover therefore a broad range of applications, reflected in the interdisciplinary nature of the several courses that have been held at the International School of Crystallography in Erice for more than 30 years and that are planned for the near future.

Synchrotron light sources

• DESY - Hamburg (Germany)
• Elettra - Trieste (Italy)
• ESRF - Grenoble (France)
• LNF - Frascati (Italy)
• PSI - Villigen (Switzerland)

Sources of neutrons

• ISIS (United Kingdom)

Crystallographic Software

• Bilbao Crystallographic Server
  The Bilbao Crystallographic Server is a web site with crystallographic programs and databases accessible via Internet. Its development has started in 1997 at the Materials Laboratory (which includes the Departments of Condensed Matter Physics and Applied Physics II) at University of Basque Country, Spain.
• checkCIF
  On line tool to validate a CIF file
• GSAS-The General Structure Analysis System
  General Structure Analysis System (GSAS) is a software package to fit structural models to x-ray and neutron diffraction data. It can be used with both single-crystal and powder diffraction data (Rietveld analysis).
• Software IC
  Software distributed by the Institute of Crystallography (IC-CNR). Bari, Italy
• WinGX
  WinGX is a MS-Windows system of programs for solving, refining and analysing single crystal X-ray diffraction data for small molecules.

Teaching materials

• IUCr Online Dictionary of Crystallography
  Dictionary of crystallography
• Periodic Table on YouTube
• MicROCKScopica
  The site collects the beautiful photos of minerals made using the microscope by Bernardo Cesare.
• Museo della Strumentazione e Informazione Cristallografica
  Located in the Institute of Crystallography (CNR, Rome), the Museum traces the extraordinary scientific adventure of Crystallography in three sections. In particular, the Instrumentation section shows original instruments and apparatuses, such as: automatic diffractometers for powders and single crystal; Weissenberg, Buerger, Guinier - de Wolff goniometers; Straumanis, Arndt - Wonnacott, Debye - Scherrer, Gandolfi, etc diffraction chambers; optical microscopes and goniometers, microdensitometers, goniocomparators, cryostats, spectrometers, X-ray components, and more.