MultiCalc

This calculator has basic functionality by default, but can do much more.

In scientific mode it can calculate roots, factorials, exponents, natural logs, and six different trigonometric functions.

In programming mode it can calculate in binary, octal, and hexadecimal as well.

The best part is, you can switch views without losing your calculations.

Feel free to send any feedback, and make mode requests. Remember, this is flexible by design.