Numi - Numi is a beautiful text calculator for Mac.
SpeedCrunch - SpeedCrunch. SpeedCrunch is a high-precision scientific calculator featuring a fast, keyboard-driven user interface. It is free and open-source software, licensed under the GPL. Download Documentation Donate .
RealCalc Scientific Calculator - RealCalc Scientific Calculator
Console Calculator - Console Calculator is a powerful calculator with a simple console interface.
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.
Qalculate! - Qalculate! is a multiplatform multi-purpose desktop calculator.