1)   ESBCalc Pro - Scientific Calculator 7.0.0
ESBCalc Pro is a Windows Scientific Calculator with Infix Notation, Exponential Notation, Printing, Brackets, Scientific Functions, Memory, Paper Trail, Result History List, Hexadecimal Conversion, Fraction Conversion and more. Register once for life

 2)   ESBProgCalc Pro - Programmers Calculator 1.1.0
ESBProgCalc Pro is a Windows Programmer Calculator with Infix Notation, Exponential Notation, Printing, Brackets, many operations, Memory, Paper Trail, History List, Hexadecimal Conversion, Fraction Conversion and more. Register once for life