Reckoner is a fast, high precision and powerful desktop calculator, clone of SpeedCrunch.
Available for Linux.

 

Quick overview

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

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

SourceForge Project Page

• http://sourceforge.net/projects/reckoner/