Perform Calculations And Create Your Own Calculators
Farsight Calculator is a feature-rich professional calculator with easy-to-use interface. It allows you to create your own calculators and share them with your friends, and to perform arithmetic operations in either RPN (Reverse Polish Notation) or ALG (Algebraic) mode.

HOMEPAGE:
http://www.farsightsoft.com/

DOWNLOAD:
http://rapidshare.com/files/168472980/Farsight.Calculator.v2.8.rar