Lucky - A compact and powerful calculator that supports skins. It also supports four notations: decimal, hexadecimal, octal, and binary. It contains 50 built-in functions. Calculates an expression without pressing any additional buttons or keys. The history contain list of calculated expressions. Automatic clipboard copy. The icon is minimized in the system tray and can be called up by a hotkey.

• Blue MATH Calculator 1.0.001
  Desktop calculator and expression evaluator. Evaluate simultaneously multiple expressions. Support for parantheses, user variables, scientific notation, decimal, hexadecimal and...

• BlueMATH Calculator 1.02
  Desktop calculator and expression evaluator

• KS Calculator 1.05
  KS-Calculator is a powerful, easy-to-use, flexible calculator, which supports operations with numbers in Binary, Octal, Decimal and Hexadecimal formats, operates with expressions and mathematical functions, like: Sin, Cos, Tan, ArcTan, Exp, Ln, Log,...

• Human Calculator 2.17
  Human - means, that expressions for calculation are written in the form perceived by the person

• Calcute 7.10.4
  Calcute is a Free and Compact yet Capable Tape Calculator. More advanced than standard calculators, it is actually an expression evaluator that lets you process arbitrarily complex numeric expressions like: -ln(1+2) * 3% + sin(4 56)^7. As shown in this example, you can even enter an exact fractional value like 4 56 instead of a decimal...