Free42 is a complete re-implementation of the HP-42S calculator and the HP-82240 printer. Free42 was written from scratch, without using any HP code. You do not need any ROM images in order to use it, yet it is fully HP-42S compatible
P41CX - The HP-41CX Emulator is a complete emulation of Hewlett Packard's venerable HP-41CX RPN calculator and it runs on your Palm OS device.
With P41CX you get the full power of the HP-41CX scientific calculator used by professionals for many, many years.
P41CX benchmarks as fast as or faster (depending on the Palm device) than the original calculator
FuncCalc - A functional calculator for your palm.
This palmware is free for basic features and shareware for extended features. You can use whole features for 20(twenty) days by free. Please try to use this palmware and enjoy it!
C4Me - The best ROM calculator replacement.
The C4Me is a new generation calculator for the PalmOS with the following features:
Multi-line edit field with standard text editor convenience (large expressions up to 256 symbols).
With the multiple edit fields you can work with several problems simultaneously
SnapCalc is a HackMaster plug-in that allows you to pop up a basic calculator from within any PalmOSŪ application, do some calculations, and, if you choose, copy the result to the underlying application
Wyrd Bin is a binary converter / calculator.
You can edit a value in binary, decimal and hexadecimal and immediately see the equivalent value in the other formats.
When editing the binary you can toggle the individual bits on / off.
There are 3 values to edit, you can then enter them into a formula and tap calculate to perform simple math
Pearson Square - Provides an easy way to calculate mixtures of two ingredients.
Very useful in the fertilizer, animal feed, and sausage industries.
Animal Science and Veterinary students should also find it very useful
Calcul-8! - One of the best freeware scientific calculators around. Includes good unit conversion support.
Modelled on common scientific calculators with a clear digit display, and plenty of on screen buttons providing easy access to functions with a minimal number of taps.
The unit conversion support is comprehensive and easy to access