Here we collected some pages that both the user and the developer can find useful while working with ChemAxon's Calculator Plugins.They discuss the theoretical background of the calculations in ChemAxon's Calculator Plugins:
Calculation of partial charge distribution
Generate3D
Isoelectric point (pI) calculation
LogP and logD calculations
NMR model prediction
pKa calculation
Red and blue representation of pKa values
Tautomerization and tautomers
Validation results
Tautomerization and tautomer models of ChemAxon
Theory of aqueous solubility prediction
The tautomerization models behind the JChem tautomer search
Calculators performance reports