Aricalc is a simple calculator useful to people who have to work with imperial values where dimensions are given in feet, inches and fractions of inch. It can do all the standard math functions with those kind of values
Neil's RPN Calculator - This Scientific calculator uses RPN Logic (Reverse Polish Notation) similar to the HP Engineering Calculator. For example: To add 2 and 3 use "2 Enter 3 +." Everytime you press Enter it adds the number to the stack
