Google Calculator, Soulver, SpeedCrunch, Numi, SaiCalculator, Microsoft Calculator Plus, Uno Calculator, Caligator, Calculator N+, HiPER Scientific Calculator, GraphCalc, Derivative Calculator, Calcbot, Excalibur, Engineering Calculator, Simple Calculator, Moffsoft FreeCalc, Numbat, Qalculate!, Microsoft PowerToy Calc, OpalCalc, Giac/Xcas, Calculator++, Frink, Qaltex, Kalq, RTRO-CLC2, Abacus, Calculator by Xlythe, Standard Deviation Calculator, Online Terminal Calculator, Limit Calculator, GNOME Calculator, makina, Calculate, HEXelon MAX, Mean Calculator, Calcuverter, ECW Expression Calculator, CalcBuddy Calculator, kanakku, EBTCalc, JustBrowsing Calculator, EdenMath, MultiCalc, ESBCalc, Oficalc, Mathdroid, Calculairum, EasyCalculator, GlassCalc, XCALC, MyCalc2, Calculator plus1, Linux Extcalc, ThinkCalculator, Getcalc, Calc98, FinKit, TTCalc, Arithmate Pro Calculator are some alternatives to Windows Calculator.