Windows Calculator, Mathematica, Wolfram Alpha, Google Calculator, SpeedCrunch, RealCalc Scientific Calculator, Numi, GetBricksApp, Parsify® for Desktop, NoteCalc, PCalc, Microsoft Calculator Plus, Precise Calculator, handyCalc, Caligator, galculator, CalcNote, Derivative Calculator, Calcbot, fxSolver, Sticky Calculator, SpeQ Mathematics, Napkin Calculator and Notepad, Engineering Calculator, Integral Calculator, NumWorks Graphing Calculator, Moffsoft FreeCalc, Numbat, Qalculate!, Microsoft PowerToy Calc, GeoGebra Scientific Calculator, OpalCalc, Omni Calculator, Notepad Calculator, Frink, Math42, Qaltex, Calculist, Median Calculator, Multi Share Calculator, Abacus, Calculator by Xlythe, Ruvenss Calculator, Standard Deviation Calculator, Algebra Calculator, Online Terminal Calculator, Magic Calculator, makina, Calculate, HEXelon MAX, ECW Expression Calculator, Getmathcharts.com, CalcBuddy Calculator, kanakku, Real Time Calculator, ESBCalc, Mathdroid, NekoCalc Notepad Calculator, GlassCalc, Wakari, CrossCalc, MyCalc2, Calculator plus1, Getcalc, MochiMicho Calculator, Calc98, FinKit, Rule of 3 Calculator, Numeric Notes, TTCalc, Arithmate Pro Calculator, errProof are some alternatives to Soulver.