Calculator Prompter
Calculator Prompter is a math expression calculator. You can evaluate expressions like sin(cos(tan(pi)))#2%10^3 Calculator Prompter has a built-in error recognition system that helps you get correct results: - Paste operator here; - Paste number here; - Missing '('; - Missing ')'; -... With Calculator Prompter you can enter the whole expression, including brackets, and operators. ... You can use Calculator to perform any of the standard operations for which you would normally use a handheld calculator.
http://www.softaddress.com/math_calculator/download.php - 256Kb - Download - Screenshot

Dicom
Q. What it does? Dicom calculates, converts and computes. The first ever computing tool that deals with dimensions of physical quantities in mathematical expression, Dicom, has the answer to expression like: 30 mi. /h. +6 ft. /s. +15. 24 m. /s. to ft. ... It is rather an expression evaluator. ... Yes, conventional software based calculator usually simulates the real calculators. ... And probably for the first time, you can evaluate dimensional expression. ... In a Dicom document you can write your formatted text and expression together which form the Dicom Input Document.
http://www.knowbotron.com/download/dicom40install.zip - 254Kb - Download - Screenshot

Numero
Numero is a calculator program that I made because I don't like the calculator that comes with Windows. Microsoft's calculator program only lets you type in one number at a time. Mine, however, can do the order of operations, so you can type in the whole expression at once. ... In addition to the text box that you enter the expression into, Numero has a text box that displays all of the expressions and answers that you have already calculated. ... Numero has about everything that you would expect to see on a scientific calculator, including trigonometric and arctrigonometric functions.
http://gpcecil.home.mchsi.com/downloads/Numero.zip - 149Kb - Download - Screenshot

Metalogic Calculator
This calculator allows natural entry of expressions (i. e. 17-(9*8) - 7 + 34. 23). Then it goes beyond just giving you a result, the "steps" box, shows you how it solved the expression step by step. Results are given simultaneously in dec/hex/oct/bin. ... Great for students and home use. ... It takes the mystery out of solving complex expressions.
http://www.metalogicsw.com/download/calculator/mlcalculator.exe - 487Kb - Download - Screenshot

Any Place Calculator
Any Place Calculator allows you to make calculations in any place where it is possible to enter expressions (e. g. text editor, lines of input, etc. ). After starting the calculator, it is automatically placed in your system tray. All you have to do to count an expression in any text editor is... The calculator is able to count arithmetic expressions with brackets, trigonometrical functions, logarithms, exhibitors, roots etc. ... The result will be substituted in the document.
http://www.fomine.com/products/apc1.exe - 169Kb - Download - Screenshot

2nd Millennium Invisible Calculator
2nd Millennium Invisible Calculator allows you to make calculations in any place where it is possible to enter expressions (e. g. text editor, lines of input, etc. ). After starting the calculator, it is automatically placed in your system tray. All you have to do to count an expression in any... The calculator is able to count arithmetic expressions with brackets, trigonometrical functions, logarithms, exhibitors, roots etc. ... The result will be substituted in the document.
http://www.zslab.com/products/2micSetup.exe - 318Kb - Download - Screenshot

FAS Calculator
FAS Calculator is an expression calculator which allows you to directly enter an expression to be evaluated. More than one hundred functions are supported, including algebraic, transcendental, trigonometric, hyperbolic, engineering functions. FAS Calculator includes functions that allow you to... The calculator's intuitive, easy-to-use interface as well as its broad support of common mathematical, engineering functions makes it a must-have for both students and professionals. ... The calculator allows you to perform some operations with complex values.
http://www.freeartsoft.com/fascalcsetup.exe - 841Kb - Download - Screenshot

CalculatorX
CalculatorX is an enhanced expression calculator. It can evaluate an expression for one time. You can use Arithmetic, Logic, Bitwise and Relation operations in your expression. And many system constants and built-in functions can also be used in the expression. ... You can use Binary, Octal, Decimal and HEXadecimal numbers in one expression to evaluate as well. ... Make Work Easy and High Efficiency by using CalculatorX. ... Here is just a short list of CalculatorX's major features: - Arithmetic operation - Logic and Bitwise operation - Relation operation - Built-In Functions -...
http://www.xoyosoft.com/cx/download/CalcX.zip - 1Mb - Download - Screenshot

Midget
A tiny, but very capable numerical calculator for Windows. It differs from others in the way you calculate your expressions: enter the whole expression at a time, like "2+3. 9/7. 1-3 sqr 5", and only then hit Enter to compute the value. The expression stays displayed so that you can correct or... If you are still using the crummy calculator applet included with Windows, it is time to try Midget. ... The program is continuously improved since 1996, so it reached a highly polished state. ... A Help file is included, and there is a Web support page.
http://www.wrotniak.net/works/midget/_zip/midget-inst.exe - 480Kb - Download - Screenshot

2002 Lucky Calculator
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. ... The icon is minimized in the system tray and can be called up by a hotkey. ... Automatic clipboard copy.
http://www.zslab.com/products/Lucky15.exe - 363Kb - Download - Screenshot