SpeedCrunch is great too, it was originally inspired by the WinXP PowerCalc - probably the best calculator from Microsoft: http://dan.hersam.com/2010/11/10/powe

SpeedCrunch is great too, it was originally inspired by the WinXP PowerCalc - probably the best calculator from Microsoft: http://dan.hersam.com/2010/11/10/powercalc-in-windows-7/ http://dan.hersam.com/2010/11/10/powercalc-in-windows-7/ (SpeedCrunch still lacks the graph rendering part, though has other features and improvements)