For the X-ray absorption spectroscopy (XAS) data processing and analysis, we use DEMETER Package, which includes:

• Athena, a program for XAS data processing
• Artemis, a program for EXAFS data analysis 
• Hephaestus, a collection of beamline utilities based on tables of atomic absorption data

For sample mass calculation, following programs are helpful:

• CatMass, under development by Adam Hoffman.
• "Formulas" menu in Hephaestus 
• XAFSmass calculator