This is very practical and easy to use calculator that you can type in like you would a word document. You don't even have to press "enter", it gives you the answer as you type number in. You can easily go back and edit the expression, copy/paste it, or...

ScienCalc

ScienCalc 1.3.22 updated

ScienCalc is a convenient and powerful scientific calculator. ScienCalc calculates mathematical expression. It supports the common arithmetic operations (+, -, *, /) and parentheses. The program contains high-performance arithmetic, trigonometric,...

Scilab

Scilab 5.5.2 updated

Scilab is free open source software for numerical computation providing a powerful computing environment for engineering and scientific applications. Scilab includes hundreds of mathematical functions. It has a high level programming language allowing...