DreamCalc is the Ultimate Free Scientific Graphing Calculator for Windows. A slick math application that's so realistic, you'll never reach for your hand-held calculator again!
eCalc is an easy to use scientific calculator with many advanced features including unit conversion, complex number math, equation solving, and even support for both algebraic and RPN operating modes.
Math Science Quest is a fun way to learn the fundamental reasoning skills that are the essence of scientific method. It can be played as an individual puzzle or a multi-player game. Players explore a complex mathematical puzzles finding solutions.
DesktopCalc is an enhanced, easy-to-use and powerful scientific calculator with an expression editor, printing operation, result history list and integrated help.
SimplexCalc is a multivariable desktop calculator for Windows. It is small and simple to use but with much power and versatility underneath. It can be used as an enhanced elementary, scientific, financial or expression calculator.