SpeedCrunch High-Precision Scientific Calculator
SpeedCrunch is a free and open source high precision scientific calculator for Windows, MacOS and Linux. It comes with keyboard driven user interface. You will get results as you type and some other features are view previous inputs as history, customizable syntax highlighting, auto-completion, 80 built-in mathematical functions, define your own functions, variables, built-in formula book, 150 built-in scientific constants and more.
