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. ... Numero has about everything that you would expect to see on a scientific calculator, including trigonometric and arctrigonometric functions. ... You can change the colors of the window, and you can change how transparent it is.
http://gpcecil.home.mchsi.com/downloads/Numero.zip - 149Kb - Download - Screenshot

ESBTools for RAVE
ESBTools for RAVE v1. 2 is an add-on for Nevrona RAVE that supplies the following: Calculator Property Editor - When you have a Property that is a Float, then you will be able to bring up the ESBPCS Calculator - a full featured Scientific Calculator with Memory. ... Support for Rave 5. ... 08BE (included with Delphi 7) as well as Rave 5. ... 13 BEX/SE (Commercial versions) is included. ... ESBPCS required to recompile, though recompile not necessary for use with apps. ... e) Null Handling Delphi source included.
http://www.esbconsult.com/esbtoolsrave.zip - 679Kb - Download

DreamCalc Graphing Calculator
DreamCalc is the smarter alternative to a hand-held Graphing Calculator for your PC or laptop! You'll get the intuitive feel and productivity of using a professional hand-held, but one which adapts to your way of working. With DreamCalc, you'll be able to graph functions and plot list data more... DreamCalc also offers you a full range of scientific functions, statistics, complex numbers, base-n logic, unit conversions, built-in constants and a powerful polynomial solver. ... Select from Reverse Polish Notation or two styles of algebraic input, and with the optional ability to run in your...
http://www.dreamcalc.com/downloads/dc3g_setup.exe - 3Mb - Download - Screenshot

Judy's TenKey
Judy's TenKey, winner of the Ziff Davis "Desktop Accessory of the Year," enables you to work faster and more reliably. Once you can see (and reuse! ) the numbers in your calculations, you will never return to the default Windows calculator. If you're still using an old-fashioned desktop... FLEXIBILITY: Judy's TenKey can process numbers like a scientific calculator (RPN), an adding machine, or a normal calculator. ... A calculator is something you use every day ... ... why not use the best? ... 95 at http://www.
http://www.JudysApps.com/10Key.zip - 334Kb - Download - Screenshot

EngCalcLite(HVAC) - Palm Calculator
Momentous HVAC Calculator. Scientific Evaluator - Superlative collection of Operators and instant reference to recent calculations. Memory functions etc. A must have for Engineers. This Palm software program empowers you with instant references and solutions of frequently encountered... This means you will have more time to analyze your information and make better informed decisions, thus helping your company maintain a competitive edge. ... Humidity Ratio,Moist Air Density,Water Vapor Density,Mixture Density,Relative Humidity,Moist Air Enthalpy.
http://www.3grtech.com/EngCalcLitePalm_HVAC.zip - 904Kb - Download - Screenshot

EngCalcLite(HVAC) - PocketPC Calculator
Momentous HVAC Calculator. Scientific Evaluator - Superlative collection of Operators and instant reference to recent calculations. Memory functions etc. A must have for Engineers. This PocketPC software program empowers you with instant references and solutions of frequently encountered... This means you will have more time to analyze your information and make better informed decisions, thus helping your company maintain a competitive edge. ... Humidity Ratio,Moist Air Density,Water Vapor Density,Mixture Density,Relative Humidity,Moist Air Enthalpy.
http://www.3grtech.com/EngCalcLitePPC_HVAC.zip - 3Mb - Download - Screenshot

MxCalc-4-in-1 - Palm Calculator
MxCalc is a 4-in-One Utility tool. It comes with a Unit Converter, Scientific Evaluator, Loan Calc. & Amortization table. Upgrade from any unit converter, loan calculator, Amortization calc. program which you are currently using and get additional discount of $2. ... Scientific Evaluator:- Evaluate expressions and directly convert them using the unit converter utility. ... Loan Calculator : - Calculate the Total interest, monthly interest, monthly payment, monthly breakup on Principal paid and interest paid .
http://www.3grtech.com/MxCalcPalm.zip - 903Kb - Download - Screenshot

MxCalc-4-in-1 - PocketPC Calculator
MxCalc is a 4-in-One Utility tool. It comes with a Unit Converter, Scientific Evaluator, Loan Calc. & Amortization table. Upgrade from any unit converter, loan calculator, Amortization calc. program which you are currently using and get additional discount of $2. ... Function Categories Math, Trigonometric, Hyperbolic, Inverse, Hyperbolic Functions EXP, LOG, LOG2, LOG10, ABS, SGN, SQR, RND, INT, SQRT, SIN, COS, TAN, COT, SEC, CSC, ASIN, ACOS, ATAN, ACOT, ASEC, ACSC, SINH, COSH, TANH, COTH, SECH, CSCH, ASINH, ACOSH, ATANH, ACOTH, ASECH, ACSCH, Loan Calculator :- Calculate the Total...
http://www.3grtech.com/MxCalcPPC.zip - 3Mb - Download - Screenshot

RPN Engineering Calculator
This RPN calculator offers 250 solutions with six unique keypads. It has a complete help system with individual tips for all but the most ordinary functions and a Tip of the Day feature for new users. You can select fixed, scientific or engineering notation and degrees, radians, or grads as... Briefly, unique to the 6 keypads are: Standard; contains several of the functions found on a normal scientific calculator (log, ln, N! ... ), and some unique to itself: a simple math teaching aid for kids, Wind Chill calculator, and more.
http://www.j-a-associates.com/DnLoads/rpn.zip - 1Mb - Download - Screenshot

Calc98
Calc98 is a pocket calculator simulator program for the Microsoft Windows operating system. It includes a comprehensive set of conversions, constants and physical property data, a built-in periodic table of the elements, number base conversions, vectors, matrices and complex numbers. ... It is especially designed for scientific and engineering users, students and teachers and it is also widely used in finance and medicine.
http://www.calculator.org/calca.exe - 488Kb - Download - Screenshot