Calculators for pH, solution preparation and concentration conversion, acid-base equilibrium, buffer, hydrolysis, and dilution calculations.

Chemistry shareware for Windows which calculates the amount of reagent to use when mixing, diluting, and dispensing solutions.

Calculates concentrations and amounts of substance in solutions visually by drawing a schema. Free demo version for Windows.

NGMSI sells software for 3-D molecular modeling, chemical database creation and manipulation, 2-D publication quality drawing, calculation of over 100 physical properties from structure, automatic chemical internet database generation, and QSAR and QSPR analysis as well as chemical databases.