Voice Calculator - Free calculator with voice input for everyday use!
Numi App - Numi is a beautiful text calculator for Mac.
RealCalc Scientific Calculator - RealCalc Scientific Calculator
Soulver - Soulver is a software application that functions as a calculator that allows you type a continuous stream of information rather than having to input data into multiple cells.
HiPER Scientific Calculator - Scientific calculator with up to 100 digits of significand and 9 digits of exponent.
Parsify Desktop - Extendable calculator for the 21st century ⚡