SpeedCrunch

SpeedCrunch is a fast, high precision and powerful desktop calculator. Available for Linux Linux, Windows Microsoft Windows, and Apple Mac OS X.

Overview

history and results on a scrollable display
up to 50 decimal precisions
unlimited variable storage
intelligent automatic completion
fully usable from the keyboard
more than 50 built-in math functions
optional virtual keypad to be used with a mouse
on-the-fly and selection calculation
customizable appearance
syntax highlighting and parentheses matching

Learn more or download it now. It's completely FREE!