- X-ray server of Uppsala University Info on X-ray scattering factors and much more
- Berekeley Lab's homepage for X-ray Interactions with Matter lots of useful data and constants, including the scattering factors of Henke, Gullikson and Davis
- Periodic Table with Edge Energies
- X-ray products, x-ray detector, x-ray analysis
- Selected Offsite Information Sources
- Stanford Synchrotron Radiation Laboratory
- SOLEIL Synchrotron, France
- Diamond Light Source, UK