AceIT Calculator
AceIT Calculator is a FREE, comprehensive, easy to use expression calculator, featuring a unique workspace where you can directly enter your expressions to be evaluated. The workspace stores all of your inputs and results, letting you examine and edit any of your calculations.

Calc98
Over a million PC users and PDA owners have already downloaded this popular calculator software Calc98. The current version is available for free download. It runs on Microsoft Windows95/98/ME, WindowsNT, Windows2000/XP and on PDA devices running WindowsCE (Pocket PC).

CalcNOW
CalcNOW is a free extendable RPN calculator. It includes three modules 1) Scientific, 2) Unit Converter and 3) Quadratic Solver. You can create your own modules using Microsoft's free eVC++ compiler. Source code for the modules is included with the download.

Cartoon Scientific Calculator
A calculator that does all the functions the inbuilt PocketPC calculator lacks. Trig functions, exponential input, RPN input, BASES hex, decimal, binary and octal. Everything that’s needed to do your homework or accounts. Comes with several fun interfaces.

DIV Calculator
DIV Calculator is a EURO Converter and an easy to use scientific calculator. It uses the so-called Reverse Polish Notation (RPN): Numbers must first be entered on the stack before a mathematical operation can be performed on them.

Eval
Eval is a combined scientific/programmer's calculator with a novel method for entering formulas. If works equally well via keyboard or stylus, and includes three different skins. For details, please see the help file.

HexCalc
HexCalc is an integer calculator for Pocket PC platforms. HexCalc performs integer arithmetic, logical operations and hex/decimal/binary number conversions. It's an ideal programmers tool for computer science related mathematics. Best of all, its free!

MortgageCALC
Using MortgageCALC you can quickly establish the costs and affordability of major asset purchases. With advanced analytical functions MortgageCALC is the standout Loan Calculator for the Property or Finance professional. MortgageCALC has been designed specifically for the PocketPC.

MyPocketCalc
MyPocketCalc is a free Reverse Polish Notation (RPN) scientific calculator designed for Pocket PC.

RPN Calculator
As indicated by its name, RPN Calculator is a calculator that uses reverse Polish notation. RPN Calculator 3.00 source code (C++) is available for non-commercial use at no charge.