SpeedCrunch is a multiplatform desktop calculator for power users.
It is designed to be enjoyed using keyboard. Result is shown in
scrollable display, history of expressions is available with up
and down arrow.
Some other features:
optional keypad, syntax highlight, matched parenthesis indicator,
just-in-time calculation (show result even before you finish typing)
and autocomplete for variables.
Submitted by: Yinghong.Liu <relaxbsd at gmail.com>