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RPN-Calculator
A Dashboard widget that provides you a nice and modern calculator...
RPN Calculator X
RPN Calculator is a simple but powerful RPN calculator for MacOS with a scalable interface via selectable function palettes...
RPN Fraction Calculator
RPN Fraction Calculator - Reverse Polish Notation (RPN) Fraction Calculator....
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RPN Scientific Calculator
An easy to use scientific calculator...
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RPN Calculator Bar
A Firefox add-on that creates a calculator in your statusbar....
RPN Calculator Widget
RPN Calculator Widget - Scientific power, RPN style...
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Full Screen RPN Calculator
This RPN calculator takes full advantage of the new Full Screen Mode in Lion....