scientific calculator (3 products)

A+ Calc 1.1 (Shareware, $15)

A+ Calc is a scientific calculator with an edit display that shows all calculations and allows editing and recalculating equations. A+ Calc includes; hexadecimal and statistics calculator tools, undo and redo buttons, 1024 character scrollable edit display. Trial use only applies to premium features, most features are available free of charge. View, edit, and recalculate with new values and/or operators. Simple uncluttered user interface optimized for easy operation. Extensive error messages with easy error recovery.

CalculatorX 1.2 (Shareware, $24.95)

CalculatorX is an enhanced expression calculator. It can evaluate an expression for one time. You can use Arithmetic, Logic, Bitwise and Relation operations in your expression. And many system constants and built-in functions can also be used in the expression. CalculatorX even supports the custom variables, custom functions and note-line. You can use Binary, Octal, Decimal and HEXadecimal numbers in one expression to evaluate as well.

Human Calculator 2.16 (Shareware, $29.95)

"Human" - means, that expressions for calculation are written in the form perceived by the person. It is the compact, handy and "smart" calculator. It is created for replacement of built-in Windows calculator. Has the beautiful adjusted user interface. With the help of semi-automatic monitoring the clipboard will save a lot of your time.