QuickCalc 

Hey, you've already paid $3000 for the hot computer, you might as well have a useful calculator! QuickCalc is a cool little tool which calculates as you type. Massive power and cute as a button. Try it out, you'll be hooked.
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Midget 

Tiny but smart calculator: just type in any expression, like "2+3/7.1-3sqr 5", and hit Enter; then modify it and evaluate again without re-entering everything. 18-digit precision, 30 functions, 12 memories, fractions, deg/min/sec, more!
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Calculator.NET 

Calculator.NET replaces the standard calculator in Windows. It incorporates full RPN support, extended function set, and customizable user interface.
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DeskBar 

DeskBar provides a visual and quick interface to access functionality that is commonly used in Windows. Shutdown, restart, logoff, changing video resolution and colors, changing or adding a default printer and more!
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Americalculator 

Calculator with a scrollable tape, options to save or print all calculations, optional large screen display. Calculates dates and times, capitalized interest, rule of three, capitalized amounts. Has 128 different synthesized sounds.
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Human Calculator 

Compact and helpful calculator for windows. General features: 1) 40 built-in functions 2) Syntax highlight of math expressions 3) Clipboard smart functionality 4) Four numerical systems for entering and printing numbers
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