Voice Calculator - Free calculator with voice input for everyday use!
PCalc - PCalc is the powerful choice for scientists, engineers, students, programmers, or indeed anybody...
RealCalc Scientific Calculator - RealCalc Scientific Calculator
Calculator++ - Calculator++ is an advanced, modern and easy to use scientific calculator.
HiPER Scientific Calculator - Scientific calculator with up to 100 digits of significand and 9 digits of exponent.
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.