| ChemBuddy: Calculators for pH, solution preparation and concentration conversion, acid-base equilibrium, buffer, hydrolysis, and dilution calculations. |
| Chemical Calculator: Chemistry shareware for Windows which calculates the amount of reagent to use when mixing, diluting, and dispensing solutions. |
| Chemical Calculator: Free Windows program for calculateing conversion factors between compounds, concentration, and amount of substance in solution. |
| Chemistry Functions: Molar conversions and an interactive periodic table directly on the webpage. Requires JavaScript. |
| ChemSolutions: Calculates concentrations and amounts of substance in solutions visually by drawing a schema. Free demo version for Windows. |
| Elem: Free program for the interpretation of elemental analysis results. For Windows and Unix; source code available. |
| Isotope Pattern Calculator v2.0: A JavaScript shareware program that calculates isotopic ratio patterns for molecular fragments. |
| JFormula: Information System intended to support multi-stepped technological processes that can be defined on a table of mixes and ingredients and do not involve chemical reactions. The system includes an algorithm to calculate material requirements. |
| Laborant Chemstation: English version of German freeware data analysis program, for various calculations including stoichiometry, pH, thermochemistry, and kinetics. |
| MS Tools: Online exact mass calculator, mass spectrum generator, and isotope distribution calculator. |
| Norgwyn Montgomery Software: 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. |
| Physicochemical Calculators: Simple online and offline calculators for boiling point at reduced pressure, unit conversion, and molecular mass. |
| Reagent Calculator: Windows software for the calculation of molecular weight, molecular formulas, mass percentages, mass spectroscopy fragments and adducts, and elemental analysis component; also includes a reagent library. |
| Visual MINTEQ: A free equilibrium speciation model, which calculates chemical equilibria in aqueous systems at low ionic strength. |
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